ixgbe: add function description

Add description for ixgbe_init_eeprom_params_X540 and whitespace fix.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ixgbe/ixgbe_x540.c

@@ -253,6 +253,9 @@ static u32 ixgbe_get_supported_physical_layer_X540(struct ixgbe_hw *hw)
 /**
  *  ixgbe_init_eeprom_params_X540 - Initialize EEPROM params
  *  @hw: pointer to hardware structure
+ *
+ *  Initializes the EEPROM parameters ixgbe_eeprom_info within the
+ *  ixgbe_hw struct in order to set up EEPROM access.
  **/
 static s32 ixgbe_init_eeprom_params_X540(struct ixgbe_hw *hw)
 {