brcm_fw_tool missing header files.
Trying to compile for the Inteno DG301.
Not all of the headerfiles needed for compiling brcm_fw_tool are in the CFLAGS -I directories.
Quickfix is to manually copy these files to one of the included directories eg. /staging_dir/target-mips_mips32_musl/usr/include But this should probably be fixed by adding the correct CFLAGS somewhere.