net: phy: add default ARCH_BCM_IPROC for MDIO_BCM_IPROC

Add default MDIO_BCM_IPROC Kconfig setting such that it is default
on for IPROC family of devices.
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/Kconfig

@@ -38,6 +38,7 @@ config MDIO_BCM_IPROC
 	tristate "Broadcom iProc MDIO bus controller"
 	depends on ARCH_BCM_IPROC || COMPILE_TEST
 	depends on HAS_IOMEM && OF_MDIO
+	default ARCH_BCM_IPROC
 	help
 	  This module provides a driver for the MDIO busses found in the
 	  Broadcom iProc SoC's.