sdm: Expose all possible configs to clients.

DispSync queries activeConfig to get accurate fps before resyncing.
Hardcoding to one config can lead to delayed resync, thereby janks when
dynamic fps kicks in. Updating right vsync period will accelerate resync.
For usecases like destination scaler, override display resolution
exposed to SurfaceFlinger.

CRs-Fixed: 2333798
Change-Id: I551fe76fb355f2f1c6374d17b805a3cc860d8c75
8 files changed