Revert "msm: kgsl: Add new API's to track device mutex owner"

This reverts commit 04925f285206b2c2795c6c16dfc1f9a6d29a5426.

Conflicts:
	drivers/gpu/msm/adreno.c
	drivers/gpu/msm/kgsl_iommu.c

Signed-off-by: renderbroken <zkennedy87@gmail.com>
msm_hotplug: Fix derp
Signed-off-by: renderbroken <zkennedy87@gmail.com>