ARM: tegra: nexus7: Correct thermal zone names

Rename thermal zones in order fix dt_binding_check warning telling that
names do not match the expected pattern.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi

@@ -1240,14 +1240,14 @@
 	};
 
 	thermal-zones {
-		nct72-local {
+		skin-thermal {
 			polling-delay-passive = <1000>; /* milliseconds */
 			polling-delay = <0>; /* milliseconds */
 
 			thermal-sensors = <&nct72 0>;
 		};
 
-		nct72-remote {
+		cpu-thermal {
 			polling-delay-passive = <1000>; /* milliseconds */
 			polling-delay = <5000>; /* milliseconds */