tls: replace ECDH_C guards with new helpers

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/library/ssl_tls12_client.c b/library/ssl_tls12_client.c
index 0d5e777..a53ea03 100644
--- a/library/ssl_tls12_client.c
+++ b/library/ssl_tls12_client.c
@@ -99,7 +99,8 @@
 }
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
 
-#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED) || \
+    defined(MBEDTLS_ECDSA_C) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
 
 MBEDTLS_CHECK_RETURN_CRITICAL
@@ -130,8 +131,8 @@
 
     return 0;
 }
-#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
-          MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
+#endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED ||
+          MBEDTLS_ECDSA_C || MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
@@ -547,7 +548,8 @@
     p += ext_len;
 #endif
 
-#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED) || \
+    defined(MBEDTLS_ECDSA_C) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
     if (uses_ec) {
         if ((ret = ssl_write_supported_point_formats_ext(ssl, p, end,
@@ -815,7 +817,8 @@
 }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
-#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED) || \
+    defined(MBEDTLS_ECDSA_C) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
 static int ssl_parse_supported_point_formats_ext(mbedtls_ssl_context *ssl,
@@ -837,9 +840,10 @@
     while (list_size > 0) {
         if (p[0] == MBEDTLS_ECP_PF_UNCOMPRESSED ||
             p[0] == MBEDTLS_ECP_PF_COMPRESSED) {
-#if !defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_ECDH_C)
+#if !defined(MBEDTLS_USE_PSA_CRYPTO) && \
+            defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED)
             ssl->handshake->ecdh_ctx.point_format = p[0];
-#endif /* !MBEDTLS_USE_PSA_CRYPTO && MBEDTLS_ECDH_C */
+#endif /* !MBEDTLS_USE_PSA_CRYPTO && MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED */
 #if !defined(MBEDTLS_USE_PSA_CRYPTO) &&                             \
             defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
             mbedtls_ecjpake_set_point_format(&ssl->handshake->ecjpake_ctx,
@@ -858,8 +862,8 @@
                                    MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
     return MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE;
 }
-#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
-          MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
+#endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED ||
+          MBEDTLS_ECDSA_C || MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
@@ -1542,8 +1546,8 @@
                 break;
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
-#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
-                defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED) || \
+                defined(MBEDTLS_ECDSA_C) || defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
             case MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS:
                 MBEDTLS_SSL_DEBUG_MSG(3,
                                       ("found supported_point_formats extension"));
@@ -1554,7 +1558,7 @@
                 }
 
                 break;
-#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
+#endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_1_2_ENABLED || MBEDTLS_ECDSA_C ||
           MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)