
Add `OffloadDeviceTest::getPlatformBackend()` and use it to skip event tests which currently fail on AMDGPU due to: ``` OL_ERRC_UNIMPLEMENTED: synchronize event not implemented ```
Add `OffloadDeviceTest::getPlatformBackend()` and use it to skip event tests which currently fail on AMDGPU due to: ``` OL_ERRC_UNIMPLEMENTED: synchronize event not implemented ```