video: driver: dynamic control support

- Set dynamic flag in inst database to allow
  dynamic setting of necessary controls.
- avoid enc qbuf call routed to dec.

Change-Id: I66cfcc6be86bfbfe237191a11d533ab6c9455f32
Signed-off-by: Akshata Sahukar <asahukar@codeaurora.org>

driver/vidc/inc/msm_venc.h

@@ -13,6 +13,7 @@ int msm_venc_streamoff_input(struct msm_vidc_inst *inst);
 int msm_venc_streamon_input(struct msm_vidc_inst *inst);
 int msm_venc_streamoff_output(struct msm_vidc_inst *inst);
 int msm_venc_streamon_output(struct msm_vidc_inst *inst);
+int msm_venc_qbuf(struct msm_vidc_inst *inst, struct vb2_buffer *vb2);
 int msm_venc_process_cmd(struct msm_vidc_inst *inst, u32 cmd);
 int msm_venc_s_fmt(struct msm_vidc_inst *inst, struct v4l2_format *f);
 int msm_venc_g_fmt(struct msm_vidc_inst *inst, struct v4l2_format *f);