Revert "msm: vidc: Initialize kernel space stack variables"

This reverts commit 3c1b8ad26f70053b78b5cb8a58b984e661edb93f.

Change-Id: I3a3a728ab16cd58563212b3cc57dcce2e2b0ed20
Merge "Revert "msm: vidc: Initialize kernel space stack variables"" into android-4.4