Add include for user config as an SLC fix (SiliconLabs#220)

* Add include for user config

* add comment

Author: mkardous-silabs

matter/mbedtls/tinycrypt/inc/mbedtls/build_info.h

@@ -6,6 +6,11 @@
 // sl_mbedtls_config header. File keeps the previous logic by only including
 // check_config without needing to modfy the generated files.
 
+// SLC-FIX until we can use the generated si sdk components
+#if defined(MBEDTLS_USER_CONFIG_FILE)
+#include MBEDTLS_USER_CONFIG_FILE
+#endif
+
 #include <mbedtls/check_config.h>
 
 #endif /* MBEDTLS_BUILD_INFO_H */