arm: dma: Expand the page protection attributes

Currently, the decision on which page protection to use
is limited to writecombine and coherent. Expand to include
non consistent memory.

Change-Id: I7585fe3ce804cf321a5585c3d93deb7a7c95045c
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>
Signed-off-by: Qingqing Zhou <qqzhou@codeaurora.org>