SSL: use MD_CAN macros

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 1c34861..b2bd8b8 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -2338,11 +2338,11 @@
 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED)
         if (opt.psk_opaque != 0 || opt.psk_list_opaque != 0) {
             /* Determine KDF algorithm the opaque PSK will be used in. */
-#if defined(MBEDTLS_HAS_ALG_SHA_384_VIA_MD_OR_PSA_BASED_ON_USE_PSA)
+#if defined(MBEDTLS_MD_CAN_SHA384)
             if (ciphersuite_info->mac == MBEDTLS_MD_SHA384) {
                 alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384);
             } else
-#endif /* MBEDTLS_HAS_ALG_SHA_384_VIA_MD_OR_PSA_BASED_ON_USE_PSA */
+#endif /* MBEDTLS_MD_CAN_SHA384 */
             alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256);
         }
 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED */