net/fec: set con_id in clk_get() call to NULL

The con_id is actually not needed for clk_get().

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index f224e58..65ee506 100644
--- a/drivers/net/ethernet/freescale/fec.c
+++ b/drivers/net/ethernet/freescale/fec.c
@@ -1585,7 +1585,7 @@
 		}
 	}
 
-	fep->clk = clk_get(&pdev->dev, "fec_clk");
+	fep->clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(fep->clk)) {
 		ret = PTR_ERR(fep->clk);
 		goto failed_clk;