hwc: Add support for virtual displays

Add support for virtual displays in hwc.
The availability is detected when a valid list first appears.
Need a valid framebuffer handle to configure writeback based
on aligned dimensions.
Force full GLES virtual layers to go through HWC based on
boardconfig flag.

b/8316155 - Implement HWComposer 1.3 w/ virtual display support
Change-Id: Ice26d47022c8582a6d30503cfa5c918057046320
Signed-off-by: Iliyan Malchev <malchev@google.com>
7 files changed
tree: 0cc2183b084d8600faf9c615557d6d64706ff409
  1. Android.mk
  2. msm8960/
  3. msm8974/
  4. msm8x26/