ARM: shmobile: marzen: Conditionally select SMSC_PHY

The marzen board uses has an SMSC911X ethernet controller which uses an
SMSC phy. Select SMSC_PHY for marzen if SMSC911X is enabled to make use of the
SMSC-specific phy driver rather than relying on the generic phy driver.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/Kconfig

@@ -250,6 +250,7 @@ config MACH_MARZEN
 	depends on ARCH_R8A7779
 	select ARCH_REQUIRE_GPIOLIB
 	select REGULATOR_FIXED_VOLTAGE if REGULATOR
+	select SMSC_PHY if SMSC911X
 	select USE_OF
 
 config MACH_MARZEN_REFERENCE
@@ -257,6 +258,7 @@ config MACH_MARZEN_REFERENCE
 	depends on ARCH_R8A7779
 	select ARCH_REQUIRE_GPIOLIB
 	select REGULATOR_FIXED_VOLTAGE if REGULATOR
+	select SMSC_PHY if SMSC911X
 	select USE_OF
 	---help---
 	   Use reference implementation of Marzen board support