Key wrapping API definition

Define the Key Wrapping API
diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 4689f3a..9e6bb8a 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -87,6 +87,11 @@
 #error "MBEDTLS_CMAC_C defined, but not all prerequisites"
 #endif
 
+#if defined(MBEDTLS_NIST_KW_C) && \
+    ( !defined(MBEDTLS_AES_C) || !defined(MBEDTLS_CIPHER_C) )
+#error "MBEDTLS_NIST_KW_C defined, but not all prerequisites"
+#endif
+
 #if defined(MBEDTLS_ECDH_C) && !defined(MBEDTLS_ECP_C)
 #error "MBEDTLS_ECDH_C defined, but not all prerequisites"
 #endif