OMAPDSS: RFBI: Maintain copy of pixel size in driver data

The RFBI driver currently relies on the omap_dss_device struct to receive the
desired pixel size of the panel. This makes the RFBI interface driver dependent
on the omap_dss_device struct.

Make the RFBI driver data maintain it's own pixel format field. A panel driver
is expected to call omapdss_rfbi_set_pixel_size() to configure the pixel format
before enabling the interface or calling omap_rfbi_configure().

Signed-off-by: Archit Taneja <archit@ti.com>
diff --git a/include/video/omapdss.h b/include/video/omapdss.h
index cc7bfb0..d03244a 100644
--- a/include/video/omapdss.h
+++ b/include/video/omapdss.h
@@ -753,8 +753,9 @@
 void omapdss_rfbi_display_disable(struct omap_dss_device *dssdev);
 int omap_rfbi_update(struct omap_dss_device *dssdev, void (*callback)(void *),
 		void *data);
-int omap_rfbi_configure(struct omap_dss_device *dssdev, int pixel_size,
-		int data_lines);
+int omap_rfbi_configure(struct omap_dss_device *dssdev, int data_lines);
 void omapdss_rfbi_set_size(struct omap_dss_device *dssdev, u16 w, u16 h);
+void omapdss_rfbi_set_pixel_size(struct omap_dss_device *dssdev,
+		int pixel_size);
 
 #endif