ARM: rmobile: Fix PHY LED mode register mask

The PHY LED mode register mask should be 0xc000 , not 0xc0000.
Correct the mask to operate on the right bits.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/silk/silk.c b/board/renesas/silk/silk.c
index 966c071..59ba262 100644
--- a/board/renesas/silk/silk.c
+++ b/board/renesas/silk/silk.c
@@ -93,7 +93,7 @@
 
 /* porter has KSZ8041RNLI */
 #define PHY_CONTROL1		0x1E
-#define PHY_LED_MODE		0xC0000
+#define PHY_LED_MODE		0xC000
 #define PHY_LED_MODE_ACK	0x4000
 int board_phy_config(struct phy_device *phydev)
 {