QCamera3: Add vendor keys for postview
am: 0a921f9364

Change-Id: Ic464a074aedbcc806bc5d3a434fe0c1e3dac0ab2
tree: bd1a86d3843b8f957838006424d014e0999cdd47
  1. msm8998/
  2. Android.mk
  3. CleanSpec.mk