tests: kernel: timer: Align timer tests to nRF54

The new Nordic platforms use GRTC instead of RTC
as the system timer.
Also the nrf54h20 CPUPPR target does not have enough memory
to execute the `timer_behavior` test.

Signed-off-by: Adam Kondraciuk <adam.kondraciuk@nordicsemi.no>

Author: adamkondraciuk

tests/kernel/timer/timer_api/src/main.c

@@ -28,7 +28,7 @@ struct timer_data {
  */
 #define INEXACT_MS_CONVERT ((CONFIG_SYS_CLOCK_TICKS_PER_SEC % MSEC_PER_SEC) != 0)
 
-#if CONFIG_NRF_RTC_TIMER
+#if CONFIG_NRF_RTC_TIMER || CONFIG_NRF_GRTC_TIMER
 /* On Nordic SOCs one or both of the tick and busy-wait clocks may
  * derive from sources that have slews that sum to +/- 13%.
  */

tests/kernel/timer/timer_behavior/testcase.yaml

@@ -13,6 +13,8 @@ tests:
         regex:
           - "RECORD:(?P<metrics>.*)"
         as_json: ['metrics']
+    platform_exclude:
+      - nrf54h20dk/nrf54h20/cpuppr
   kernel.timer.timer_behavior_external:
     tags:
       - kernel