OMAPFB: fix wrong clock aliases and device name

The clock aliases and the dss platform device name have changed, and
omapfb fails to initialize. Update the names to correct ones.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap/rfbi.c b/drivers/video/omap/rfbi.c
index eada9f1..0c6981f 100644
--- a/drivers/video/omap/rfbi.c
+++ b/drivers/video/omap/rfbi.c
@@ -90,7 +90,7 @@
 		return PTR_ERR(rfbi.dss_ick);
 	}
 
-	rfbi.dss1_fck = clk_get(&rfbi.fbdev->dssdev->dev, "dss1_fck");
+	rfbi.dss1_fck = clk_get(&rfbi.fbdev->dssdev->dev, "fck");
 	if (IS_ERR(rfbi.dss1_fck)) {
 		dev_err(rfbi.fbdev->dev, "can't get dss1_fck\n");
 		clk_put(rfbi.dss_ick);