Revert "msm: vidc: cache-invalidate encoder output buffers after alloc"

This reverts commit 00acad4065e81cb19a9a270cac2ff496ce57ea63, since
change I3f2c9b7c13b3e09097ce07ca7b59154b97401052 removed buffer
kernel mapping entirely, causing this to operate on non-existing
buffers
Revert "Revert "msm: gemini: Support upto 64mp encoding""

This reverts commit 8e764deeccfa2f1453fdc61459f2b482ad28067c.

Change-Id: I7fbee74306487fccbb122dcd4c41d13f67494c02