net: ftgmac100: Select ASPEED MDIO driver for the AST2600

Ensures we can talk to a PHY via MDIO on the AST2600, as the MDIO
controller is now separate from the MAC.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/faraday/Kconfig

@@ -32,6 +32,7 @@ config FTGMAC100
 	depends on ARM || NDS32 || COMPILE_TEST
 	depends on !64BIT || BROKEN
 	select PHYLIB
+	select MDIO_ASPEED if MACH_ASPEED_G6
 	---help---
 	  This driver supports the FTGMAC100 Gigabit Ethernet controller
 	  from Faraday. It is used on Faraday A369, Andes AG102 and some