boards: nxp_rw6xx: Enable RTC counter support for RW6XX.

This is used as wakeup source to wakeup from Power Modes
3 and 4.

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

boards/nxp/frdm_rw612/frdm_rw612_common.dtsi

@@ -196,6 +196,7 @@
 &os_timer {
 	status = "okay";
 	wakeup-source;
+	deep-sleep-counter = <&rtc_highres>;
 };
 
 &systick {
@@ -216,6 +217,12 @@
 	pinctrl-names = "default";
 };
 
+/* RTC is the wakeup source for PM modes 3,4 */
+&rtc_highres {
+	status = "okay";
+	wakeup-source;
+};
+
 &nbu {
 	status = "okay";
 	wakeup-source;

boards/nxp/rd_rw612_bga/rd_rw612_bga.dtsi

@@ -270,6 +270,12 @@ nxp_8080_touch_panel_i2c: &arduino_i2c {
 	pinctrl-names = "default";
 };
 
+/* RTC is the wakeup source for PM modes 3,4 */
+&rtc_highres {
+	status = "okay";
+	wakeup-source;
+};
+
 &pmu {
 	reset-causes-en = <PMU_RESET_CM33_LOCKUP>,
 			  <PMU_RESET_ITRC>,
@@ -288,6 +294,7 @@ nxp_8080_touch_panel_i2c: &arduino_i2c {
 &os_timer {
 	status = "okay";
 	wakeup-source;
+	deep-sleep-counter = <&rtc_highres>;
 };
 
 &systick {