staging: et131x: Add link status to adapter struct

This will be used to determine if the link state has changed when the phydev
informs the et131x that a change has occurred (in et131x_adjust_link)
Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/et131x/et131x_adapter.h

@@ -147,6 +147,9 @@ struct et131x_adapter {
 	/* Flags that indicate current state of the adapter */
 	u32 flags;
 
+	/* local link state, to determine if a state change has occurred */
+	int link;
+
 	/* Configuration  */
 	u8 rom_addr[ETH_ALEN];
 	u8 addr[ETH_ALEN];