Revert "msm: vidc: Free OCMEM during power collapse" (Temasek)

To disable OCMEM clock during power collapse, video driver
has to free up the allocated OCMEM. This memory will be
re-allocated before bringing venus core out of reset.

CRs-Fixed: 571083
Change-Id: I88f7e771b21046d9817feb17b06b3739f128c434
Signed-off-by: Vikash Garodia <vgarodia@codeaurora.org>

Temasek :

This fixes YouTube 720p prolonged pause bug.

Issue - YouTube 720p prolong pause will result in black screen and subsequently unable to play any 720p videos untill reboot.

Possible issue in reverting this commit
- I am unsure if I cleanly reverted but YouTube 720p prolong pause is fixed. All videos tested ok.
Yank555.lu CAF-full-W03-Slim v1.0e+ config