Apply new naming convention to mbed TLS macros

Author: yanesca

features/mbedtls/platform/inc/platform_mbed.h

@@ -21,6 +21,6 @@
 #define MBEDTLS_ENTROPY_HARDWARE_ALT
 #endif
 
-#if defined(MBEDTLS_HW_SUPPORT)
+#if defined(MBEDTLS_CONFIG_HW_SUPPORT)
 #include "mbedtls_device.h"
 #endif