p4: update hwc, nvcam, video and ril from 7500's XWLP9

-reference sammobile
Revert "p4: remove audio_policy.tegra"

This reverts commit 8f7124b403929296614d41f85a962f5bbf6433e3.
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1