Add support to read refresh rate thresholds and controls from the
DisplayDeviceConfig

Bug: 193892229
Test: atest DisplayDeviceConfigTest
Change-Id: Iae19676b8c353fa62b6ff1f57201a2daec569877
Merged-In: I0295b0b8586d683ef3ad66f903de4874d4445f1c
8 files changed