Revert "msm: kgsl: use kgsl_mmu_device_setstate() if the GPU is already idle"

This reverts commit fdaf22c8462a9015b516f62948e04643509a263b.
Revert "msm: kgsl: Do not hold memory spinlock when calling find region function"

This reverts commit 1d42853811a03c5d7ae70bccdc049915354482dd.
Revert "msm: kgsl: Only initialize process structure once"

This reverts commit 305459667fd92906f7d79a5d70fd85c7c219d0ea.
Revert "msm: kgsl: Add a section to list memory entries in snapshot"

This reverts commit 70bd52ee85bdd914967622a366dca8ddaa638e2b.
Revert "msm: kgsl: Hold driver process mutex till sysfs entries deleted"

This reverts commit 9997fdca78c7d3ba492e3628d9a5ea5442b9a7e4.