mm: remove odd HAVE_PTE_SPECIAL

mm: remove odd HAVE_PTE_SPECIAL

Remove the additional define HAVE_PTE_SPECIAL and rely directly on
CONFIG_ARCH_HAS_PTE_SPECIAL.

There is no functional change introduced by this patch

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Laurent Dufour <[email protected]>
Acked-by: David Rientjes <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Jerome Glisse <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Christophe LEROY <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>