msm: vidc: Initialize kernel space stack variables

This reverts commit 6e4e81a6acc0fef0f301cfb27ae574f76a7e4308.

Change-Id: I5fc531033cf5327a3a87cf9cdf6c8744930de2f6
Merge pull request #2 from omnirom/android-4.4

msm: vidc: Initialize kernel space stack variables