tests: pm/device_runtime: Run in native_sim only

This is an API test and it was not designed to run in a real target.
Some attempts to run this test in devices cause the device to hang
after the test execution because the device sleeps and no wake up
source is set.

Fixes #68453

(cherry picked from commit 1ed452b)

Original-Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
GitOrigin-RevId: 1ed452b
Change-Id: I029649239e9887ee2a5e314e452847342a412b91
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5476006
Commit-Queue: Dawid Niedźwiecki <dawidn@google.com>
Tested-by: Dawid Niedźwiecki <dawidn@google.com>
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Reviewed-by: Dawid Niedźwiecki <dawidn@google.com>

tests/subsys/pm/device_runtime_api/testcase.yaml

@@ -1,11 +1,12 @@
+common:
+ tags: pm
+
 tests:
  pm.device_runtime.api:
- tags: pm
- integration_platforms:
- - native_sim
+ platform_allow:
+ - native_sim
  pm.device_runtime.isr_safe.api:
- tags: pm
- integration_platforms:
- - native_sim
+ platform_allow:
+ - native_sim
  extra_configs:
-  - CONFIG_TEST_PM_DEVICE_ISR_SAFE=y
+ - CONFIG_TEST_PM_DEVICE_ISR_SAFE=y