igb: add 88E1543 initialization code

Initialize the 88E1543 PHY.

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/igb/e1000_phy.h b/drivers/net/ethernet/intel/igb/e1000_phy.h
index 24d55ed..aa1ae61 100644
--- a/drivers/net/ethernet/intel/igb/e1000_phy.h
+++ b/drivers/net/ethernet/intel/igb/e1000_phy.h
@@ -62,6 +62,7 @@
 void igb_power_down_phy_copper(struct e1000_hw *hw);
 s32  igb_phy_init_script_igp3(struct e1000_hw *hw);
 s32  igb_initialize_M88E1512_phy(struct e1000_hw *hw);
+s32  igb_initialize_M88E1543_phy(struct e1000_hw *hw);
 s32  igb_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data);
 s32  igb_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data);
 s32  igb_read_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 *data);