video: driver: add power suspend and resume

add power suspend and resume implementations.

Change-Id: I785b5b05f37ed5ed656d2cbc04f5d429ff543260
Signed-off-by: Darshana Patil <darshana@codeaurora.org>

driver/vidc/inc/msm_vidc_driver.h

@@ -322,6 +322,7 @@ int msm_vidc_trigger_ssr(struct msm_vidc_core *core,
 void msm_vidc_ssr_handler(struct work_struct *work);
 void msm_vidc_pm_work_handler(struct work_struct *work);
 void msm_vidc_fw_unload_handler(struct work_struct *work);
+int msm_vidc_suspend(struct msm_vidc_core *core);
 void msm_vidc_batch_handler(struct work_struct *work);
 int msm_vidc_event_queue_init(struct msm_vidc_inst *inst);
 int msm_vidc_event_queue_deinit(struct msm_vidc_inst *inst);