libhwc2.1: expose panel calibration status

A function to get a panel's calibration status was added to HWC. This is
exposed over an AIDL interface to other services.

Bug: 228113713
Change-Id: I1c276226b510c772410e619a62812afa4f6fb680
Merged-In: I1c276226b510c772410e619a62812afa4f6fb680
8 files changed