Corgi Touchscreen bugfix.  If the PMU isn't running, the register needs to
be set to a sane value rather than reusing some random value.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>