Updating fuzzService with IBinder transact codes

Using transaction codes defined in IBinder with B_PACK_CHARS
so that these functions can be easily covered in fuzzing.

Test: atest -c fuzz_service_test
Test: atest -c binderRecordReplayTest
Bug: 295191685
Change-Id: Ic6bd5b22d943c38343e177794bdff3b991f8103b
1 file changed