tflite: Add 4 Relu related activations in op_compat_test

This increases the built-in operators coverage of GPU delegate to 31/79.

BUG=b:342537877
TEST=op_compat_test --stable_delegate_settings_file=gpu.json

Change-Id: Ic4948a7f77326e83780f4c76698ffaa51bfbdf83
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/tflite/+/5599916
Commit-Queue: Shik Chen <shik@chromium.org>
Reviewed-by: Ching-Kang Yen <chingkang@chromium.org>
Auto-Submit: Shik Chen <shik@chromium.org>
Tested-by: Shik Chen <shik@chromium.org>
Commit-Queue: Ching-Kang Yen <chingkang@chromium.org>
1 file changed