Merge pull request #9982 from artokin/nanostack_update_for_mbedos_512

Nanostack update for Mbed OS 5.12

Author: 0xc0170

features/nanostack/sal-stack-nanostack/source/Security/protocols/tls_sec_prot/tls_sec_prot_lib.c

@@ -24,7 +24,7 @@
 #include MBEDTLS_CONFIG_FILE
 #endif
 
-#if defined(MBEDTLS_SSL_TLS_C)
+#if defined(MBEDTLS_SSL_TLS_C) && defined(MBEDTLS_X509_CRT_PARSE_C)
 #define WS_MBEDTLS_SECURITY_ENABLED
 #endif