This hunk from the sharpsl/corgi backlight update appears to have got lost
somewhere along the way.  Its needed to match the other changes.
Signed-Off-By: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>