Call bootFinished using JNI.

This way we dont need to use FIRST_CALL_TRANSACTION which forces us to
set bootFinished as the first method in the class.

These files have also been formatted with clang.

Test: Manually booted the device after changes.
Bug: 221898546
Change-Id: Ifd04938a22da9b811c6c032c229c9b58e8c1b4c7