video: driver: Set secure mode in encoder

Enable HFI_PROP_SECURE when secure session is enabled
in encoder. Same behaviour as Decoder.

Change-Id: I5edfe3d735fda8edea9e491ae17546945b4431a1
Signed-off-by: Chinmay Sawarkar <chinmays@codeaurora.org>

driver/vidc/inc/msm_vidc_driver.h

@@ -304,6 +304,7 @@ int msm_vidc_remove_session(struct msm_vidc_inst *inst);
 int msm_vidc_add_session(struct msm_vidc_inst *inst);
 int msm_vidc_session_open(struct msm_vidc_inst *inst);
 int msm_vidc_session_set_codec(struct msm_vidc_inst *inst);
+int msm_vidc_session_set_secure_mode(struct msm_vidc_inst *inst);
 int msm_vidc_session_set_default_header(struct msm_vidc_inst *inst);
 int msm_vidc_session_streamon(struct msm_vidc_inst *inst,
 		enum msm_vidc_port_type port);