net: mvgbe: convert to DM

Add driver model support to the mvgbe driver. As a temporary measure
both DM and non-DM uses are supported. Once all the users have been
converted the non-DM support can be dropped.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Tested-by: Michael Walle <michael@walle.cc>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 79eef2d..f762b08 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -181,6 +181,7 @@
 config MVGBE
 	bool "Marvell Orion5x/Kirkwood network interface support"
 	depends on KIRKWOOD || ORION5X
+	select PHYLIB if DM_ETH
 	help
 	  This driver supports the network interface units in the
 	  Marvell Orion5x and Kirkwood SoCs