fbdev: sh_mobile_lcdc: make platform videomode table optional

Add a default 720p mode to the sh_mobile_lcdc driver to be used, when no
videomode is specified in the platform data. This can be used, e.g., with HDMI.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/video/sh_mobile_hdmi.c b/drivers/video/sh_mobile_hdmi.c
index 4d6ab86..94a94fd 100644
--- a/drivers/video/sh_mobile_hdmi.c
+++ b/drivers/video/sh_mobile_hdmi.c
@@ -1051,7 +1051,8 @@
 		goto egetclk;
 	}
 
-	rate = sh_hdmi_clk_configure(hdmi, pdata->lcd_chan->lcd_cfg[0].pixclock);
+	/* Some arbitrary relaxed pixclock just to get things started */
+	rate = sh_hdmi_clk_configure(hdmi, 37037);
 	if (rate < 0) {
 		ret = rate;
 		goto erate;