OMAPDSS: convert pixel clock to common videomode style

omapdss has its own video-timings struct, but we want to move the common
videomode.

The first step is to change the omapdss's pixelclock unit from kHz to
Hz. Also, omapdss uses "pixel_clock" field name, whereas the common
videomode uses "pixelclock" field name. This patch changes the field
name also, as that makes it easy to spot any non-converted pixel_clock
uses.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/displays-new/panel-dsi-cm.c b/drivers/video/omap2/displays-new/panel-dsi-cm.c
index b7baafe..f317c87 100644
--- a/drivers/video/omap2/displays-new/panel-dsi-cm.c
+++ b/drivers/video/omap2/displays-new/panel-dsi-cm.c
@@ -1184,7 +1184,7 @@
 
 	ddata->timings.x_res = 864;
 	ddata->timings.y_res = 480;
-	ddata->timings.pixel_clock = DIV_ROUND_UP(864 * 480 * 60, 1000);
+	ddata->timings.pixelclock = 864 * 480 * 60;
 
 	dssdev = &ddata->dssdev;
 	dssdev->dev = dev;