Poll for AON spare register BIT(0) to become zero before
asserting XO reset from video driver to ensure CVP/EVA driver
is not asserting XO reset around the same time. Asserting
XO reset by both driver at the same time may result in
unpredictable behavior.
Change-Id: I71a0bd0175ef7701c9a855abbf3c2e741d937dfb
Signed-off-by: Maheshwar Ajja <quic_majja@quicinc.com>