dts: nrf: Temp device node added to nRF5 devices with yaml binding

1. Temp device node added to all nRF5 DTSI files.
2. Added yaml binding for Nordic Temp node.
3. Set codeowner of nordic dts bindings to @anangl

Signed-off-by: Gaute Gamnes <gaute.gamnes@nordicsemi.no>
6 files changed