ARM: Kirkwood: Convert DNSKW to use gpio-poweroff.

Also enable the gpio-poweroff driver when DT is used.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/arch/arm/mach-kirkwood/Kconfig b/arch/arm/mach-kirkwood/Kconfig
index d018ad4..35b3258 100644
--- a/arch/arm/mach-kirkwood/Kconfig
+++ b/arch/arm/mach-kirkwood/Kconfig
@@ -46,6 +46,9 @@
 
 config ARCH_KIRKWOOD_DT
 	bool "Marvell Kirkwood Flattened Device Tree"
+	select POWER_SUPPLY
+	select POWER_RESET
+	select POWER_RESET_GPIO
 	select USE_OF
 	help
 	  Say 'Y' here if you want your kernel to support the