From: Matt Porter <mporter@kernel.crashing.org>

Fixes PPC4xx from the do_page_fault()->handle_page_fault() change.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>