tests/subsys/debug/cpu_load/debug.cpu_load fails at nrf54h20 at PPR

[nordic-piks]

• Describe the bug
  The tests:
• tests/subsys/debug/cpu_load/debug.cpu_load
• tests/subsys/debug/cpu_load/debug.cpu_load.periodic_report

Observed for

• nrf54h20dk@0.9.0/nrf54h20/cpuppr

To Reproduce
Steps to reproduce the behavior:

1. have nrf54h20dk@0.9.0/nrf54h20/cpuppr connected
2. go to your zephyr dir
3. call ./scripts/twister -T tests/subsys/debug/cpu_load -p nrf54h20dk@0.9.0/nrf54h20/cpuppr --device-testing --device-serial /dev/ttyACM1 -v --inline-logs
4. See console output with error

Expected behavior
Valid console output

Impact
Not clear

Logs and console output

*** Booting Zephyr OS build v4.1.0-1122-g961593d15290 ***
Running TESTSUITE cpu_load
===================================================================
START - test_load

    Assertion failed at ../../../../../../../../../zephyr/tests/subsys/debug/cpu_load/src/main.c:37: cpu_load_test_load: load not within 500 +/- DELTA

 FAIL - test_load in 0.216 seconds
===================================================================
TESTSUITE cpu_load failed.

------ TESTSUITE SUMMARY START ------

SUITE FAIL -   0.00% [cpu_load]: pass = 0, fail = 1, skip = 0, total = 1 duration = 0.216 seconds
 - FAIL - [cpu_load.test_load] duration = 0.216 seconds

------ TESTSUITE SUMMARY END ------

===================================================================
PROJECT EXECUTION FAILED

Environment (please complete the following information):

• OS: Ubuntu 20.04.1 LTS
• Toolchain Zephyr SDK 0.17.0
• Commit SHA or Version used: v4.1.0-rc1-8-gff4dc62f0e52