Replace SUPPORTED_ELLIPTIC_CURVES with SUPPORTED_GROUPS

According to RFC7919 and RFC8442 , they are same.

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index f34f2de..977ecc8 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -317,7 +317,7 @@
 
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-static int ssl_parse_supported_elliptic_curves( mbedtls_ssl_context *ssl,
+static int ssl_parse_supported_groups_ext( mbedtls_ssl_context *ssl,
                                                 const unsigned char *buf,
                                                 size_t len )
 {
@@ -1646,10 +1646,10 @@
 
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-            case MBEDTLS_TLS_EXT_SUPPORTED_ELLIPTIC_CURVES:
+            case MBEDTLS_TLS_EXT_SUPPORTED_GROUPS:
                 MBEDTLS_SSL_DEBUG_MSG( 3, ( "found supported elliptic curves extension" ) );
 
-                ret = ssl_parse_supported_elliptic_curves( ssl, ext + 4, ext_size );
+                ret = ssl_parse_supported_groups_ext( ssl, ext + 4, ext_size );
                 if( ret != 0 )
                     return( ret );
                 break;