Mark common android.os.Parcel methods as FastNative

Mark the marshaling functions for non-primitive parameters as being
@FastNative: they're all expected to complete quickly.

According to the table in CriticalNative.java, the difference between
a regular JNI call and a FastNative call is about 80ns, so this change
should shave about 160ns per non-primitive parameter off the latency
of a binder transaction. The actual savings will be greater as we also
use these Parcel methods to marshal and unmarshal complex objects like
PackageInfo sent as objects over Binder.

Bug: 142271139
Test: boots
Change-Id: I85c3ee8498640193b9c0777c8c5e7eb349c7b23c