Improve comment for mbedcrypto compile flags

Author: networkfusion

CMake/binutils.common.cmake

@@ -649,7 +649,7 @@ macro(nf_setup_target_build_common)
 
         # need to unset several flags for MbedTLS to compile correctly
         target_compile_options(mbedtls PRIVATE -Wno-undef -Wno-error=unused-function -Wno-error=discarded-qualifiers -Wno-error=unused-parameter)
-        # -fomit-frame-pointer Can be removed when the issue is resolved: https://github.com/Mbed-TLS/mbedtls/issues/9875
+        # FIXME: -fomit-frame-pointer should be removed when the issue is resolved: https://github.com/Mbed-TLS/mbedtls/issues/9875
         target_compile_options(mbedcrypto PRIVATE -fomit-frame-pointer -Wno-undef -Wno-error=unused-function -Wno-error=discarded-qualifiers -Wno-error=unused-parameter)
         target_compile_options(mbedx509 PRIVATE -Wno-undef -Wno-error=unused-function -Wno-error=discarded-qualifiers -Wno-error=unused-parameter)