igb: Implementation of 1-sec delay for i210 devices

This patch adds 1 sec delay mechanism to i210 device family, in order
to avoid erroneous link issue with the link partner.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@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/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index c1fae7a..6807b09 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -448,6 +448,8 @@
 	struct i2c_client *i2c_client;
 	u32 rss_indir_tbl_init;
 	u8 rss_indir_tbl[IGB_RETA_SIZE];
+
+	unsigned long link_check_timeout;
 };
 
 #define IGB_FLAG_HAS_MSI		(1 << 0)
@@ -459,6 +461,7 @@
 #define IGB_FLAG_RSS_FIELD_IPV4_UDP	(1 << 6)
 #define IGB_FLAG_RSS_FIELD_IPV6_UDP	(1 << 7)
 #define IGB_FLAG_WOL_SUPPORTED		(1 << 8)
+#define IGB_FLAG_NEED_LINK_UPDATE	(1 << 9)
 
 /* DMA Coalescing defines */
 #define IGB_MIN_TXPBSIZE	20408