power: declare power states unconditionally
power: declare power states unconditionally

Declare power management states unconditionally.
Should fix https://github.com/zephyrproject-rtos/zephyr/issues/13194.

Signed-off-by: Emanuele Di Santo <58b3ebaa556fff9ee88aab1044a35f0af0dd7061@nordicsemi.no>

ldts/zephyr,zephyrproject-rtos/zephyr,ldts/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,nashif/zephyr,Vudentz/zephyr,Vudentz/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,zephyrproject-rtos/zephyr,ldts/zephyr,ldts/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,galak/zephyr,explora26/zephyr,nashif/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,galak/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,Vudentz/zephyr,explora26/zephyr,finikorg/zephyr,finikorg/zephyr,nashif/zephyr,Vudentz/zephyr,ldts/zephyr,explora26/zephyr,explora26/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr