video: driver: add start cmd allow checks inside state handler

use state specific checks inside state_handler instead of
relying global msm_vidc_allow_start function.

Change-Id: I04182ee3b63fa9044acf4f40adc47ea97eaa7538
Signed-off-by: Govindaraj Rajagopal <quic_grajagop@quicinc.com>

driver/vidc/inc/msm_vidc_driver.h

@@ -493,7 +493,6 @@ bool msm_vidc_allow_property(struct msm_vidc_inst *inst, u32 hfi_id);
 int msm_vidc_update_property_cap(struct msm_vidc_inst *inst, u32 hfi_id,
 	bool allow);
 enum msm_vidc_allow msm_vidc_allow_stop(struct msm_vidc_inst *inst);
-bool msm_vidc_allow_start(struct msm_vidc_inst *inst);
 enum msm_vidc_allow msm_vidc_allow_input_psc(struct msm_vidc_inst *inst);
 bool msm_vidc_allow_drain_last_flag(struct msm_vidc_inst *inst);
 bool msm_vidc_allow_psc_last_flag(struct msm_vidc_inst *inst);