Camera: Add feature extensions

This change includes below gerrits:

  # This is a combination of 7 commits.
  # The first commit's message is:
  Camera: Add support for QC camera features.
  Added APIs and keys for all QC features. This
  will enable application to get/set paramters.
  (cherrypicked from commit d0c5a0ee7e9af41320fed00ff324c6d0f22eb697)
  Change-Id: I68c23aaf7267645efeb4d4743b390a048292b7fd

  # This is the 2nd commit message:
  Camera: Adds support for meta data callbacks
  - This change adds a new type of callback
    that will be called when there are pending
    meta data notifications.
  Change-Id: I84f5cbafe4f023c7b0efa9ec8620756b0eaa428d

  # This is the 3rd commit message:
  Camera: Adds support for longshot configuration
  - The Camera API is extended with one additional
    call for longshot mode configuration.
  (cherrypicked from commit 867c4865b2a61a8e844e2784c41b7aafc392aec0 )
  Change-Id: Idb91a21dc0d9fa9d22b4a6bbcc0b2eebfc2cb6db

  # This is the 4th commit message:
  Camera: Add support for manual 3A
  Add API for manual 3A (awb/af/aec).
  Change-Id: Ia5240207ce7a6628e8fdfef79f56db01add14aef

  # This is the 5th commit message:
  Camera: use single KEY for set/get manual 3A parameters.
  Instead of using different KEYs, we can share one same key,
  for set/get 3A parameters from APK.
  Change-Id: Ie3216ee4e1b8f62fcdd57a0be119d4b8dcdd81b3

  # This is the 6th commit message:
  Framework: Adding support for Auto HDR
  Adding support for Auto HDR for camera
  CRs-fixed: 629556
  Change-Id: Ie5e4718524d2ed799f1f9af1f76e89c01d743ac8

  # This is the 7th commit message:
  Camera: Add support for video rotation
  Adding apis to support video rotation.
  CRs-Fixed: 672804
  Change-Id: Ic67e82058824a6dc7cc803ef0efe61475350bafc

Change-Id: Ideb191d666e7de8db132811f66a7796d87e75971
(cherry picked from commit cd85262c)