msm: vidc: Increase power collapse timeout value

Currently video driver will power down the video hardware
if video hardware is in IDLE state for 2 seconds. This is
causing CTS testcase failure if power down sequence executed
within 5 seconds from the start of the video playback.
GDSC is expected to be turned off when power down sequence
executed from video driver but it is not because PIL driver
has 5 seconds timeout value to remove GDSC vote from PIL side.
Hence GDSC is not being turned off within 5 seconds from the
video start even though video driver executed power down sequence.
Increase the timeout value to 10 seconds from 2 seconds in
video driver to power down the video hardware which ensures the
PIL driver has removed its GDSC vote and resolve the CTS failure.

Change-Id: I5b79c793595ce7e19666a88cd39f0a08675e9382
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>