ext: hal: nordic: Add missing nordic header file needed by nrf_power.h
ext: hal: nordic: Add missing nordic header file needed by nrf_power.h

While importing the nrf_power.h to use the nrf_power_resetreas_get()
function the missing header file error was presented.

Origin: Nordic SDK 12.2.0 (components/drivers_nrf/hal)
URL: http://developer.nordicsemi.com/nRF5_SDK/
License: 3-clause BSD
Maintained-by: External

Signed-off-by: Flavio Arieta Netto <78425c32ad78109b2b4aa7b799549c63868ddfc5@exati.com.br>
Signed-off-by: flavio <78425c32ad78109b2b4aa7b799549c63868ddfc5@exati.com.br>

fbsder/zephyr,mbolivar/zephyr,fbsder/zephyr,mbolivar/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,mbolivar/zephyr,zephyrproject-rtos/zephyr,explora26/zephyr,GiulianoFranchetto/zephyr,zephyriot/zephyr,zephyriot/zephyr,mbolivar/zephyr,finikorg/zephyr,explora26/zephyr,zephyriot/zephyr,finikorg/zephyr,nashif/zephyr,ldts/zephyr,finikorg/zephyr,fbsder/zephyr,GiulianoFranchetto/zephyr,zephyrproject-rtos/zephyr,aceofall/zephyr-iotos,aceofall/zephyr-iotos,punitvara/zephyr,nashif/zephyr,Vudentz/zephyr,galak/zephyr,kraj/zephyr,explora26/zephyr,punitvara/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,aceofall/zephyr-iotos,zephyriot/zephyr,finikorg/zephyr,GiulianoFranchetto/zephyr,galak/zephyr,Vudentz/zephyr,finikorg/zephyr,explora26/zephyr,fbsder/zephyr,ldts/zephyr,ldts/zephyr,kraj/zephyr,kraj/zephyr,explora26/zephyr,aceofall/zephyr-iotos,GiulianoFranchetto/zephyr,fbsder/zephyr,Vudentz/zephyr,ldts/zephyr,Vudentz/zephyr,punitvara/zephyr,nashif/zephyr,nashif/zephyr,ldts/zephyr,Vudentz/zephyr,aceofall/zephyr-iotos,galak/zephyr,kraj/zephyr,punitvara/zephyr,punitvara/zephyr,zephyriot/zephyr,kraj/zephyr,zephyrproject-rtos/zephyr,mbolivar/zephyr,galak/zephyr