From: Christoph Hellwig <hch@lst.de>

This splits out a small helper that checks whether tlb batching should be
enabled from hpte_init_native, thus cleaning up the ifdef hell and killing
a warning for pmac builds.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>