drm/omap: omap_display_timings: rename vbp to vback_porch

In preparation to move the stack to use the generic videmode struct for
display timing information rename the vbp member to vback_porch.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
index 7d60e46..00e3aa2 100644
--- a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
+++ b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
@@ -30,7 +30,7 @@ static const struct omap_video_timings hdmic_default_timings = {
 	.hback_porch	= 48,
 	.vsync_len	= 2,
 	.vfront_porch	= 11,
-	.vbp		= 31,
+	.vback_porch	= 31,
 
 	.vsync_level	= OMAPDSS_SIG_ACTIVE_LOW,
 	.hsync_level	= OMAPDSS_SIG_ACTIVE_LOW,