igb: Fix code comments and whitespace

Aligns the multi-line code comments with the desired style for the
networking tree.  Also cleaned up whitespace issues found during the
cleanup of code comments (i.e. remove unnecessary blank lines,
use tabs where possible, properly wrap lines and keep strings on a
single line)

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
diff --git a/drivers/net/ethernet/intel/igb/e1000_mac.h b/drivers/net/ethernet/intel/igb/e1000_mac.h
index e6d6ce4..5e13e83 100644
--- a/drivers/net/ethernet/intel/igb/e1000_mac.h
+++ b/drivers/net/ethernet/intel/igb/e1000_mac.h
@@ -35,8 +35,7 @@
 #include "e1000_defines.h"
 #include "e1000_i210.h"
 
-/*
- * Functions that should not be called directly from drivers but can be used
+/* Functions that should not be called directly from drivers but can be used
  * by other files in this 'shared code'
  */
 s32  igb_blink_led(struct e1000_hw *hw);
@@ -49,15 +48,15 @@
 s32  igb_get_bus_info_pcie(struct e1000_hw *hw);
 s32  igb_get_hw_semaphore(struct e1000_hw *hw);
 s32  igb_get_speed_and_duplex_copper(struct e1000_hw *hw, u16 *speed,
-				       u16 *duplex);
+				     u16 *duplex);
 s32  igb_id_led_init(struct e1000_hw *hw);
 s32  igb_led_off(struct e1000_hw *hw);
 void igb_update_mc_addr_list(struct e1000_hw *hw,
-	                     u8 *mc_addr_list, u32 mc_addr_count);
+			     u8 *mc_addr_list, u32 mc_addr_count);
 s32  igb_setup_link(struct e1000_hw *hw);
 s32  igb_validate_mdi_setting(struct e1000_hw *hw);
 s32  igb_write_8bit_ctrl_reg(struct e1000_hw *hw, u32 reg,
-			       u32 offset, u8 data);
+			     u32 offset, u8 data);
 
 void igb_clear_hw_cntrs_base(struct e1000_hw *hw);
 void igb_clear_vfta(struct e1000_hw *hw);
@@ -80,12 +79,12 @@
 	e1000_mng_mode_host_if_only
 };
 
-#define E1000_FACTPS_MNGCG    0x20000000
+#define E1000_FACTPS_MNGCG	0x20000000
 
-#define E1000_FWSM_MODE_MASK  0xE
-#define E1000_FWSM_MODE_SHIFT 1
+#define E1000_FWSM_MODE_MASK	0xE
+#define E1000_FWSM_MODE_SHIFT	1
 
-#define E1000_MNG_DHCP_COOKIE_STATUS_VLAN    0x2
+#define E1000_MNG_DHCP_COOKIE_STATUS_VLAN	0x2
 
 extern void e1000_init_function_pointers_82575(struct e1000_hw *hw);