video: driver: avoid drain_last_flag to drc state transition

[1] DRC_DRAIN_LAST_FLAG to DRC is not allowed. So remove support
[2] introduced in_range macro
[3] removed process_response_packet function
[4] introduced msm_vidc_process_pending_ipsc function.

Change-Id: I1bc7ed6f0d94052900a4655a2e3da9ea44d60143
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>

driver/vidc/inc/msm_vidc_internal.h

@@ -607,11 +607,6 @@ struct msm_vidc_hfi_frame_info {
 	u32                    data_corrupt;
 };
 
-struct msm_vidc_cmd_range {
-	u32 begin;
-	u32 end;
-};
-
 struct msm_vidc_decode_vpp_delay {
 	bool                   enable;
 	u32                    size;