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_util.h

@@ -160,6 +160,13 @@ struct sde_hw_scaler3_lut_cfg {
 	size_t sep_len;
 };
 
+struct sde_hw_inline_pre_downscale_cfg {
+	u32 pre_downscale_x_0;
+	u32 pre_downscale_x_1;
+	u32 pre_downscale_y_0;
+	u32 pre_downscale_y_1;
+};
+
 u32 *sde_hw_util_get_log_mask_ptr(void);
 
 void sde_reg_write(struct sde_hw_blk_reg_map *c,