Update in height alignments from 40 to 20 for FHD 60FPS cmd mode to
match DSC slice settings. The values should be integral multiple of
height defined for panel.
Change-Id: I41e2e5b3ec0b75a6eb2f39879356c92239853f74
Signed-off-by: Abhinav Saurabh <quic_abhisaur@quicinc.com>