Make fuzzer run on device and print less logs

* Update the build system so that the fuzzer runs on device
* Set up an init method to initialize things only once
* Set log level to error. This avoids a lot of warning LOGs

Bug: 249085422
Test: Run the fuzzer locally, both host and device
Change-Id: I1664b654bb7351dcf75bef08b9c26cee4b648429
2 files changed