omap iommu: cleanup iommu page address mask and definitions
omap iommu: cleanup iommu page address mask and definitions

This is just a cleanup, but adds a few macros here, which can be used
in the proceeding patches.

Signed-off-by: Hiroshi DOYU <e891c4ae8deef7e6c0a3fb82004ec71ca9fb7e00@nokia.com>
Signed-off-by: Tony Lindgren <1001e8702733cced254345e193c88aaa47a4f5de@atomide.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs