Read reserved bytes in fuzzService

Updating fuzzService to read the reserved bytes for future
needs. By reading reserved bytes already, we don't have
to change the fuzzer corpus if any additional branches
are introduced in fuzzService.

Test: m libbinder_random_parcel
Bug: 278975837
Change-Id: Ice0703e168b904ad959da0b41033e1056cdb6307
1 file changed