boards: nxp: mcxw23: Add power management MCXW23 board

Add mcxw23_evk and frdm_mcxw23 platforms to the power management
test suite to validate power management functionality on MCXW23
hardware.

Signed-off-by: Jason Yu <zejiang.yu@nxp.com>

boards/nxp/frdm_mcxw23/doc/index.rst

@@ -198,6 +198,14 @@ should see the following message in the terminal:
    *** Booting Zephyr OS build v4.2.0-2105-g48f2ffda26de ***
    Hello World! frdm_mcxw23/mcxw236
 
+Power Management
+================
+
+When Power Management is enabled :kconfig:option:`CONFIG_PM`, OSTIMER is used as
+OS tick timer.
+
+Limitation: Wakeup pin can't be used as wakeup source in Standby mode.
+
 .. include:: ../../common/board-footer.rst.inc
 
 .. _MCXW23 SoC Website:

boards/nxp/mcxw23_evk/doc/index.rst

@@ -180,6 +180,14 @@ should see the following message in the terminal:
    *** Booting Zephyr OS build v4.2.0-2105-g9da1d56da9e7 ***
    Hello World! mcxw23_evk/mcxw236
 
+Power Management
+================
+
+When Power Management is enabled :kconfig:option:`CONFIG_PM`, OSTIMER is used as
+OS tick timer.
+
+Limitation: Wakeup pin can't be used as wakeup source in Standby mode.
+
 .. include:: ../../common/board-footer.rst.inc
 
 .. _MCXW23 SoC Website:

tests/subsys/pm/power_mgmt_soc/testcase.yaml

@@ -30,6 +30,8 @@ tests:
       - ek_ra8d2/r7ka8d2kflcac/cm85
       - ek_ra8m2/r7ka8m2jflcac/cm85
       - frdm_mcxn236
+      - mcxw23_evk
+      - frdm_mcxw23
     tags: pm
     integration_platforms:
       - mec15xxevb_assy6853