ixgbe: Use generic MDIO definitions and functions

Compile-tested only.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 435bbc9..b8727d5 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2519,6 +2519,7 @@
 config IXGBE
 	tristate "Intel(R) 10GbE PCI Express adapters support"
 	depends on PCI && INET
+	select MDIO
 	---help---
 	  This driver supports Intel(R) 10GbE PCI Express family of
 	  adapters.  For more information on how to identify your adapter, go