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

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
1 file changed