drivers/video/nuc900fb.c: fix lcd build error

Fix a nuc900 lcd build error.

Since the 'nuc900_driver_clksrc_div()' API cannot be merged into mainline
successfully, I removed this clock source selection hook in this driver.
This means nuc900 lcd driver has to select default clock source from the
external crystal now.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Cc: Qiang Wang <rurality.wq@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/nuc900fb.c

@@ -596,8 +596,6 @@ static int __devinit nuc900fb_probe(struct platform_device *pdev)
 		goto release_regs;
 	}
 
-	nuc900_driver_clksrc_div(&pdev->dev, "ext", 0x2);
-
 	fbi->clk = clk_get(&pdev->dev, NULL);
 	if (!fbi->clk || IS_ERR(fbi->clk)) {
 		printk(KERN_ERR "nuc900-lcd:failed to get lcd clock source\n");