CRISv32: Add missing include for mm.h

Fixes the following compile error.

arch/cris/arch-v32/kernel/time.c: In function 'reset_watchdog':
arch/cris/arch-v32/kernel/time.c:121:2:
        error: implicit declaration of function 'global_page_state'

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
CRIS: Fix headers_install

Fix headers_install by adjusting the path to arch files.
And delete unused Kbuild file.
Drop special handling of cris in the headers.sh script
as a nice side-effect.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
CRIS: Export ioremap_nocache

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
CRIS: Export missing function symbols

strcmp was lost when all other string functions were removed,
but we still have an optimized version for this (__ARCH_HAS_STRCMP),
so any driver built as a module would not have access to this symbol.

In a similar manner, we had optimized versions of
csum_partial_copy_from_user and __do_clear_user
but no exported symbols for them, breaking bunch of other drivers
when built as a module.

At the same time, move EXPORT_SYMBOL(__copy_user) and
EXPORT_SYMBOL(__copy_user_zeroing) C-files so it's
located together with the function definition.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>