msm: kgsl: Device mutex lock for kgsl_cmdbatch_destroy

kgsl_cancel_event must be called with device->mutex
otherwise it will cause a BUG_ON in kgsl_cancel_event

kgsl_cmdbatch_destroy will call kgsl_cancel_event, hence added
device->mutex lock/unlock wherever kgsl_cmdbatch_destroy is called

Change-Id: I9b9959236d6be0d80987279a64a0715363229f7b
Signed-off-by: Anupam Sakargayan <asakarga@codeaurora.org>
2 files changed