ARM: tegra: configure power off for Dalmore

Add DT property to tell the regulator to register pm_power_off to make
"shutdown" work.

Signed-off-by: Bill Huang <bilhuang@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>

arch/arm/boot/dts/tegra114-dalmore.dts

@@ -845,6 +845,8 @@
 			#interrupt-cells = <2>;
 			interrupt-controller;
 
+			ti,system-power-controller;
+
 			palmas_gpio: gpio {
 				compatible = "ti,palmas-gpio";
 				gpio-controller;