[BNX2]: Add 5708S parallel detection.

Add code to parallel detect 1Gbps and 2.5Gbps link speeds.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index 78ff09d..7fa7008 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -4040,6 +4040,7 @@
 
 	u8			serdes_an_pending;
 #define SERDES_AN_TIMEOUT	(HZ / 3)
+#define SERDES_FORCED_TIMEOUT	(HZ / 10)
 
 	u8			mac_addr[8];