drm/omap: rename color_mode to fourcc

Now that we use fourccs, we can also rename the 'color_mode' variables
to 'fourcc'.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c
index 16b510d..c5b2088e 100644
--- a/drivers/gpu/drm/omapdrm/omap_fb.c
+++ b/drivers/gpu/drm/omapdrm/omap_fb.c
@@ -132,7 +132,7 @@ void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
 	struct plane *plane = &omap_fb->planes[0];
 	uint32_t x, y, orient = 0;
 
-	info->color_mode = fb->format->format;
+	info->fourcc = fb->format->format;
 
 	info->pos_x      = win->crtc_x;
 	info->pos_y      = win->crtc_y;