camera_v1: Fix the post-processor

This implementation was mismatched with userspace, resulting in the
inability to handle frames. Fixit by restoring an older version

Change-Id: I92f053ec03f4e4cce5cf18b0177b81352fd262a0
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_kernel_google_msm into cm-11.0_HAZE