UIO: add pgprot_noncached() to UIO mmap code
Mapping of physical memory in UIO needs pgprot_noncached() to ensure that IO memory is not cached. Without pgprot_noncached(), it (accidentally) works on x86 and arm, but fails on PPC. Signed-off-by: NJean-Samuel Chenard <jsamch@gmail.com> Signed-off-by: NHans J Koch <hjk@linutronix.de> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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