net: phy: fix mdio-mscc-miim build

PHYLIB is not selected by mdio-mscc-miim but it uses mdio devres helpers.
Explicitly select MDIO_DEVRES in this driver's Kconfig entry.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 1814cff2 ("net: phy: add a Kconfig option for mdio_devres")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/Kconfig

@@ -185,6 +185,7 @@ config MDIO_MOXART
 config MDIO_MSCC_MIIM
 	tristate "Microsemi MIIM interface support"
 	depends on HAS_IOMEM
+	select MDIO_DEVRES
 	help
 	  This driver supports the MIIM (MDIO) interface found in the network
 	  switches of the Microsemi SoCs; it is recommended to switch on