tg3: Add 50610M phy ID for 5785

This patch adds the 50610M phy ID for 5785.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 9999345..d770da1 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2864,6 +2864,7 @@
 #define PHY_REV_BCM5401_C0		0x6
 #define PHY_REV_BCM5411_X0		0x1 /* Found on Netgear GA302T */
 #define TG3_PHY_ID_BCM50610		0x143bd60
+#define TG3_PHY_ID_BCM50610M	0x143bd70
 #define TG3_PHY_ID_BCMAC131		0x143bc70
 #define TG3_PHY_ID_RTL8211C		0x001cc910
 #define TG3_PHY_ID_RTL8201E		0x00008200