powerpc: Add little endian support for word-at-a-time functions

The powerpc word-at-a-time functions are big endian specific.
Bring in the x86 version in order to support little endian builds.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
1 file changed