disp: msm: populate submode blob information

Mode information apart from the fields in
drm_mode_modeinfo that can trigger a modeset like
dsc-nondsc, video-cmd are defined in sub mode.
For each mode in connector->modes there can be
multiple submodes.

Change-Id: Ib8697d3fa4ea5261d9ac4943b1a4149e22c4da2f
Signed-off-by: Raviteja Tamatam <travitej@codeaurora.org>

msm/dsi/dsi_display.h

@@ -814,5 +814,14 @@ int dsi_display_update_dyn_bit_clk(struct dsi_display *display, struct dsi_displ
  */
 int dsi_display_restore_bit_clk(struct dsi_display *display, struct dsi_display_mode *mode);
 
+/**
+ * dsi_display_mode_match() - compares two dsi mode structures
+ * @mode1:       dsi_display_mode to be compared
+ * @mode2:       dsi_display_mode to be compared
+ * @match_flags: Values to compare
+ * Return: True if mode matches
+ */
+bool dsi_display_mode_match(const struct dsi_display_mode *mode1,
+		struct dsi_display_mode *mode2, unsigned int match_flags);
 
 #endif /* _DSI_DISPLAY_H_ */