Codec2: adjust to API style/namespace fixes

C2P::alloc_unique => AllocUnique
C2FSVQ::field => field()
C2FSVQ::type => type()
android::C2Component.. => C2Component..

Bug: 64121714
Test: Build
Change-Id: Ied33cb6fa3bea23db3ad4a98930997e3d97be911
5 files changed