Add __iomem to __raw_check_addr(), which nukes ~13809 sparse
warnings on allmodconfig.
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NMatthew Wilcox <matthew@wil.cx>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>