zeus: Enable MM to use CMA heap.

Using CMA instead of carveout allows the kernel & Android use this space as long
as there are no clients on it. If a client requests this memory, the area will
be freed.

Change-Id: I5f31f9ef9739f454e55c2bd8d246cca9c80266a5
zeus: Make pmem_adsp cached

Change-Id: Iea65a087966ca1908dfc50204df46b8cef522642
zeus: Remove more unused code

Remove TSIF & QCOM crypto code.
zeus: Specify outer cache in correct place.

Change-Id: I231c4c00473eafd9a7d08e4831613698d26e5c89
defconfigs: Sync zeus configs with mogami