On devices that have more than one high refresh rate (eg. 90/120/144 Hz)
allow choosing any of those as the peak refresh rate rather than
offering only the maximum as a toggle. Use a radio picker preference,
similar to screen timeout and display resolution settings. Also add
a toggle for VRR that sets the minimum refresh rate.

someone5678: Adapt to U QPR2

Change-Id: I820bfae2f2ce2e5fc57d5c53968b962aed69d953
Signed-off-by: aswin7469 <aswinas@pixysos.com>
Signed-off-by: minaripenguin <minaripenguin@users.noreply.github.com>
Signed-off-by: Farzin <itisfarzin@gmail.com>
Signed-off-by: Farzin <itisFarzin@gmail.com>