tree fc5c95b2d2cbc299f9474813df56db707037f656
parent 3dda2a0953149c779b8d23092cfe3ea39867b259
author Saurabh Shah <saurshah@codeaurora.org> 1365811740 -0700
committer Saurabh Shah <saurshah@codeaurora.org> 1366045843 -0700

hwc/overlay: Fix dma mode design and issues.

Add support for tracking the mode in which DMA is being used in overlay.
Remove unnecessary tracking variables, and their set,reset inconsistency.

With such varibles in hwc, it still leads to overlay giving out DMA pipes.
Make overlay as the single tracking place.

Change-Id: Ib949f3d0ef5918ef323c81cb1768b68a68c83da4