bnx2x: Add CMS functionality for 848x3

Add CMS(Common Mode Sense) functionality for 848x3 as this reduces power consumption and allows a better 10G link stability

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2x/bnx2x_hsi.h b/drivers/net/bnx2x/bnx2x_hsi.h
index 7c35f4e..51d69db 100644
--- a/drivers/net/bnx2x/bnx2x_hsi.h
+++ b/drivers/net/bnx2x/bnx2x_hsi.h
@@ -330,6 +330,12 @@
 #define PORT_HW_CFG_ENABLE_BAM_ON_KR_DISABLED		      0x00000000
 #define PORT_HW_CFG_ENABLE_BAM_ON_KR_ENABLED		      0x00100000
 
+	/*  Enable Common Mode Sense */
+#define PORT_HW_CFG_ENABLE_CMS_MASK			      0x00200000
+#define PORT_HW_CFG_ENABLE_CMS_SHIFT			      21
+#define PORT_HW_CFG_ENABLE_CMS_DISABLED			      0x00000000
+#define PORT_HW_CFG_ENABLE_CMS_ENABLED			      0x00200000
+
 	u32 speed_capability_mask2;			    /* 0x28C */
 #define PORT_HW_CFG_SPEED_CAPABILITY2_D3_MASK		      0x0000FFFF
 #define PORT_HW_CFG_SPEED_CAPABILITY2_D3_SHIFT		      0