Allow user to select low power refresh rate [2/2]

Squashed with the revert of the old one:

Revert "Settings: Add toggle for 60Hz refresh rate on battery saver"

This reverts commit bde5767732178e6f4223c9dd0bc36cd4381ffefa.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Change-Id: Ie624ade45fb1951bba251c8d0e7996f2f101e7a0
5 files changed