net: mvpp2: MVPP2 now needs MVMDIO

Changes to mvpp2.c require the MVMDIO module which in turn uses
DM_MDIO.

Signed-off-by: Nevo Hed <nhed+github@starry.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

drivers/net/Kconfig

@@ -298,6 +298,8 @@ config MVPP2
 	bool "Marvell Armada 375/7K/8K network interface support"
 	depends on ARMADA_375 || ARMADA_8K
 	select PHYLIB
+	select MVMDIO
+	select DM_MDIO
 	help
 	  This driver supports the network interface units in the
 	  Marvell ARMADA 375, 7K and 8K SoCs.