Downgrade fatal log on host to error

Fuzzer is breaking due to fatal log for host. Downgrade it to error.

Test: m android.hardware.neuralnetworks-service.example_fuzzer &&
out/host/linux-x86/fuzz/x86_64/android.hardware.neuralnetworks-service.example_fuzzer/android.hardware.neuralnetworks-service.example_fuzzer
Bug: 312902296

Change-Id: I7013ed14f6644d0459929380202de45f92575cf9