media.c2 aidl: minor fixes

C2 AIDL fixes.
- Allow setting a new output surface as the same surface
- Remove verbose logs from sync fence
- return C2_BLOCKING instead of C2_TIMED_OUT from C2IgbaBlockPool

Bug: 254050314
Change-Id: I4e15853e7fed0dc803db1204c541e7936624cbd3
3 files changed