ARM: dts: imx6q-tbs2910: Enable snvs-poweroff

This patch enables snvs-poweroff for TBS2910 boards.
Signed-off-by: Soeren Moch <smoch@web.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx6q-tbs2910.dts

@@ -208,6 +208,10 @@ &sata {
 	status = "okay";
 };
 
+&snvs_poweroff {
+	status = "okay";
+};
+
 &spdif {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_spdif>;