bnx2x: Supporting new BCM8726 FW

Microcode download requires write of another register and read from
"Limiting/LRM mode" register before setting

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_reg.h b/drivers/net/bnx2x_reg.h
index 8de80cc..b8ce6fc 100644
--- a/drivers/net/bnx2x_reg.h
+++ b/drivers/net/bnx2x_reg.h
@@ -5843,6 +5843,7 @@
 #define MDIO_PMA_REG_ROM_VER2		0xca1a
 #define MDIO_PMA_REG_EDC_FFE_MAIN	0xca1b
 #define MDIO_PMA_REG_PLL_BANDWIDTH	0xca1d
+#define MDIO_PMA_REG_GEN_CTRL2		0xca1e
 #define MDIO_PMA_REG_MISC_CTRL0 	0xca23
 #define MDIO_PMA_REG_LRM_MODE		0xca3f
 #define MDIO_PMA_REG_CDR_BANDWIDTH	0xca46