This fixes most of the issues with exported headers on CRIS, although
we do still need to deal with the asm/arch symlink.
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

These include nothing more than the basic set of files listed in
asm-generic/Kbuild.asm. Any extra arch-specific files will need to be
added.
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>