samples: drivers: counter: alarm: Add lp_em_cc2340r5 overlay

Add overlay for lp_em_cc2340r5 to counter/alarm sample.

Signed-off-by: Stoyan Bogdanov <[email protected]>

Author: bogdanovs

samples/drivers/counter/alarm/boards/lp_em_cc2340r5.overlay

@@ -0,0 +1,3 @@
+&rtc0 {
+	status = "okay";
+};

samples/drivers/counter/alarm/sample.yaml

@@ -41,6 +41,7 @@ tests:
       - s32z2xxdc2/s32z270/rtu1
       - s32z2xxdc2@D/s32z270/rtu0
       - s32z2xxdc2@D/s32z270/rtu1
+      - lp_em_cc2340r5
     integration_platforms:
       - nucleo_f746zg
   sample.drivers.counter.alarm.stm32_rtc:

samples/drivers/counter/alarm/src/main.c

@@ -65,6 +65,8 @@ struct counter_alarm_cfg alarm_cfg;
 #define TIMER DT_NODELABEL(counter0)
 #elif defined(CONFIG_COUNTER_RENESAS_RZ_GTM)
 #define TIMER DT_INST(0, renesas_rz_gtm_counter)
+#elif defined(CONFIG_COUNTER_CC23X0_RTC)
+#define TIMER DT_NODELABEL(rtc0)
 #else
 #error Unable to find a counter device node in devicetree
 #endif