Mark videocc clock node as GenPD provider and disable the video GDSC
regulator nodes for kera platform.
While at it, keep the gdsc's as it is on kera-rumi platform.
Change-Id: I4a41aacbaa7d144f72db48b9af3a336a92ef95aa
Signed-off-by: Anaadi Mishra <quic_anaadim@quicinc.com>