tls: use TLS 1.3 guards in ssl_tls13 modules

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index fbbbb67..77325c3 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -35,7 +35,7 @@
 #include "ssl_debug_helpers.h"
 #include "md_psa.h"
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED)
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
 /* Define a local translating function to save code size by not using too many
  * arguments in each translating place. */
 static int local_err_translation(psa_status_t status)
@@ -194,7 +194,7 @@
         return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED)
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
     if (mbedtls_ssl_tls13_named_group_is_ecdhe(group_id) ||
         mbedtls_ssl_tls13_named_group_is_ffdh(group_id)) {
         int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
@@ -211,7 +211,7 @@
         ssl->handshake->xxdh_psa_privkey = MBEDTLS_SVC_KEY_ID_INIT;
         return 0;
     } else
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED */
+#endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED */
     if (0 /* other KEMs? */) {
         /* Do something */
     }
@@ -503,7 +503,7 @@
         return MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE;
     }
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED)
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
     if (mbedtls_ssl_tls13_named_group_is_ecdhe(group) ||
         mbedtls_ssl_tls13_named_group_is_ffdh(group)) {
         MBEDTLS_SSL_DEBUG_MSG(2,
@@ -513,7 +513,7 @@
             return ret;
         }
     } else
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED */
+#endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED */
     if (0 /* other KEMs? */) {
         /* Do something */
     } else {
diff --git a/library/ssl_tls13_generic.c b/library/ssl_tls13_generic.c
index 639e591..f8e078e 100644
--- a/library/ssl_tls13_generic.c
+++ b/library/ssl_tls13_generic.c
@@ -39,7 +39,7 @@
 #include "psa/crypto.h"
 #include "mbedtls/psa_util.h"
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED)
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
 /* Define a local translating function to save code size by not using too many
  * arguments in each translating place. */
 static int local_err_translation(psa_status_t status)
@@ -1496,7 +1496,7 @@
     return ret;
 }
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED)
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
 
 int mbedtls_ssl_tls13_read_public_xxdhe_share(mbedtls_ssl_context *ssl,
                                               const unsigned char *buf,
@@ -1625,7 +1625,7 @@
 
     return 0;
 }
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED */
+#endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED */
 
 /* RFC 8446 section 4.2
  *
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index d88aae6..c12631e 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -837,7 +837,7 @@
 
 #define SSL_TLS1_3_PARSE_KEY_SHARES_EXT_NO_MATCH 1
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED)
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
 /*
  *  ssl_tls13_parse_key_shares_ext() verifies whether the information in the
  *  extension is correct and stores the first acceptable key share and its
@@ -940,7 +940,7 @@
     }
     return 0;
 }
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED */
+#endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED */
 
 MBEDTLS_CHECK_RETURN_CRITICAL
 static int ssl_tls13_client_hello_has_exts(mbedtls_ssl_context *ssl,
@@ -1563,7 +1563,7 @@
                 break;
 #endif /* PSA_WANT_ALG_ECDH || PSA_WANT_ALG_FFDH*/
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED)
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
             case MBEDTLS_TLS_EXT_KEY_SHARE:
                 MBEDTLS_SSL_DEBUG_MSG(3, ("found key share extension"));
 
@@ -1588,7 +1588,7 @@
                 }
 
                 break;
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED */
+#endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED */
 
             case MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS:
                 /* Already parsed */
@@ -1913,7 +1913,7 @@
 
     *out_len = 0;
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED)
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
     if (mbedtls_ssl_tls13_named_group_is_ecdhe(named_group) ||
         mbedtls_ssl_tls13_named_group_is_ffdh(named_group)) {
         ret = mbedtls_ssl_tls13_generate_and_write_xxdh_key_exchange(
@@ -1925,7 +1925,7 @@
             return ret;
         }
     } else
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_XXDH_PSA_ANY_ENABLED */
+#endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED */
     if (0 /* Other kinds of KEMs */) {
     } else {
         ((void) ssl);