SF : Add support for rotated panel mounts

This is a combination of 2 commits.

SF: Add support for inverse mounted panels

Add 180 rotation in SF to account for inverse mounted panels.
The framework will be unaffected and use policies for a 0 mounted
panel. SF changes the global transform and silently induces the H,V
flips. Similar flips are added to screenshots as well.

Change-Id: I6e9576ee734ee85097491eaa1e8e94cfb3731e0f

SF: Add support for all flips of panel mount

Add support for all flips of panel mount, H, V, HV (180). Property
persist.panel.mountflip can be set to 1 for H-Flip, 2 for V-Flip,
3 for HV-Flip (180 / inverse mount).

Change-Id: Ide7b8378ad6a423e5d7335fedc27d480a25b53ae
CRs-fixed: 990622

Change-Id: Ide7b8378ad6a423e5d7335fedc27d480a25b53af