[ARM] pxa: don't pass a consumer clock name for devices with unique clocks

Where devices only have one consumer, passing a consumer clock ID
has no real benefit.  Remove it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index cc59c52..0bc2c5a 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -1429,7 +1429,7 @@
 	memset(fbi, 0, sizeof(struct pxafb_info));
 	fbi->dev = dev;
 
-	fbi->clk = clk_get(dev, "LCDCLK");
+	fbi->clk = clk_get(dev, NULL);
 	if (IS_ERR(fbi->clk)) {
 		kfree(fbi);
 		return NULL;