ssl_ciphersuites: adding new internal helper symbols

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/include/mbedtls/ssl_ciphersuites.h b/include/mbedtls/ssl_ciphersuites.h
index 2db5209..843a0e4 100644
--- a/include/mbedtls/ssl_ciphersuites.h
+++ b/include/mbedtls/ssl_ciphersuites.h
@@ -292,6 +292,11 @@
 #define MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED
 #endif
 
+#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) || \
+    defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED)
+#define MBEDTLS_KEY_EXCHANGE_WITH_ECDSA_ANY_ENABLED
+#endif
+
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED) || \
     defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED)
 #define MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED
@@ -307,6 +312,13 @@
 #define MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED
 #endif
 
+/* Helper to state that certificated based client authentication through ECDSA
+ * is supported in TLS 1.2 */
+#if defined(MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED) && \
+    defined(MBEDTLS_PK_CAN_ECDSA_SIGN) && defined(MBEDTLS_PK_CAN_ECDSA_VERIFY)
+#define MBEDTLS_KEY_EXCHANGE_ECDSA_CERT_REQ_ALLOWED_ENABLED
+#endif
+
 /* Key exchanges involving server signature in ServerKeyExchange */
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)       || \
     defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED)     || \