staging: unisys: remove MEMCMP_IO

This patch removes MEMCMP_IO from commontypes.h and fixes the one use of the
macro so it calls uuid_cmp_le() instead. The old code was comparing UUIDs
directly.

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>