We cannot link with devkitPPC libgcc because it includes __eabi which we
do not want, as that sets up r2 and r13 SDA registers from elf file symbols
but that is done by the RPL FileInfo read by CafeOS for the Wii U.
In future we should probably fork devkitPPC to build without powerpc eabi
in order to match what we expect for the Wii U.
