Add changes to support writeback module in the dpu_hw_ctl
interface.

changes in v4:
	- fix the copyright year order
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483507/
Link: https://lore.kernel.org/r/1650984096-9964-9-git-send-email-quic_abhinavk@quicinc.comSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>