e1000e: cleanup calls to setup_physical_interface function pointer

Call the MAC ops setup_physical_interface function pointer instead of the
MAC-family-specific function to conform to the rest of the driver design.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/e1000e/ich8lan.c

@@ -3353,7 +3353,7 @@ static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw)
 		hw->fc.current_mode);
 
 	/* Continue to configure the copper link. */
-	ret_val = e1000_setup_copper_link_ich8lan(hw);
+	ret_val = hw->mac.ops.setup_physical_interface(hw);
 	if (ret_val)
 		return ret_val;