ARM: __io abuse cleanup

ARM: __io abuse cleanup

Several platforms incorrectly use __io() for casting to 'void __iomem *'.
This converts all of those uses to use the common IOMEM macro.

Reported-by: Arnd Bergmann <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
Acked-by: Anton Vorontsov <[email protected]>
Cc: Russell King <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Magnus Damm <[email protected]>
Cc: Srinidhi Kasagar <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Cc: [email protected]
Acked-by: Arnd Bergmann <[email protected]>