VR HWC is being split out of VR Window Manager. It creates a HW binder
interface used by SurfaceFlinger which implements the HWComposer HAL and
a regular binder interface which will be used by a system app to receive
the SurfaceFlinger output.

Bug: b/36051907
Test: Ran in permissive mode and ensured no permission errors show in
logcat.

Change-Id: If1360bc8fa339a80100124c4e89e69c64b29d2ae

Test: no denials seen
Bug: 36278706
Change-Id: I78d6fc84073a6ca006fb2b1ef95c73935cc9a1e0

A new API was added to gralloc that exposes this FD.

Bug: 32541196
Test: `m -j32` succeeds. Sailfish device boots.
Change-Id: I605e5ba826cdce1518e33649d3f787610db43aee

This set of rules is neeeded to allow vr_windows_manager to run
successfully on the system.

Bug: 32541196
Test: `m -j32` succeeds. Sailfish device boots.
Change-Id: I0aec94d80f655a6f47691cf2622dd158ce9e475f