boards: nxp: frdm_mcxa344: Support wwdt for NXP frdm_mcxa344 board

Support watchdog for NXP frdm_mcxa344 board.
Test using samples/drivers/watchdog.

Signed-off-by: Neil Chen <[email protected]>

Author: NeilChen93

boards/nxp/frdm_mcxa344/board.c

@@ -163,6 +163,10 @@ void board_early_init_hook(void)
 	RESET_ReleasePeripheralReset(kLPUART3_RST_SHIFT_RSTn);
 #endif
 
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(wwdt0))
+	CLOCK_SetClockDiv(kCLOCK_DivWWDT0, 1u);
+#endif
+
 	/* Set SystemCoreClock variable. */
 	SystemCoreClock = CLOCK_INIT_CORE_CLOCK;
 }

boards/nxp/frdm_mcxa344/frdm_mcxa344.dts

@@ -21,6 +21,7 @@
 		led2 = &blue_led;
 		sw0 = &user_button_2;
 		sw1 = &user_button_3;
+		watchdog0 = &wwdt0;
 	};
 
 	chosen {
@@ -178,3 +179,7 @@
 	pinctrl-0 = <&pinmux_lpuart2>;
 	pinctrl-names = "default";
 };
+
+&wwdt0 {
+	status = "okay";
+};

boards/nxp/frdm_mcxa344/frdm_mcxa344.yaml

@@ -20,4 +20,5 @@ supported:
   - i2c
   - spi
   - uart
+  - watchdog
 vendor: nxp