nios2: include linux/type.h in io.h
nios2: include linux/type.h in io.h

This is require for __iomem definition.

Signed-off-by: Ley Foon Tan <95f178e5e278816be0436ff61f034a97684bdd0e@altera.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs