disp: msm: sde: pre-downscale support for inline rotation v2

Add support for enabling pre-downscale block to increase the
maximum downscale capability for true inline rotation use cases.

Change-Id: Ifa544bb0ae69439abef4bd427134290090fe7230
Signed-off-by: Steve Cohen <cohens@codeaurora.org>

msm/sde/sde_hw_sspp.h

@@ -516,6 +516,14 @@ struct sde_hw_sspp_ops {
 			struct sde_hw_scaler3_cfg *scaler3_cfg,
 			u32 offset);
 
+	/**
+	 * setup_pre_downscale - setup pre-downscaler for inline rotation
+	 * @ctx: Pointer to pipe context
+	 * @pre_down: Pointer to pre-downscaler configuration
+	 */
+	void (*setup_pre_downscale)(struct sde_hw_pipe *ctx,
+		struct sde_hw_inline_pre_downscale_cfg *pre_down);
+
 	/**
 	 * get_scaler_ver - get scaler h/w version
 	 * @ctx: Pointer to pipe context