[automerger skipped] Separate H4 packet parsing from data retrieval. am:...

[automerger skipped] Separate H4 packet parsing from data retrieval. am: 6456c793 -s ours am: bfb53c84 -s ours

am skip reason: Merged-In I3a8f24197fed953b86d228f0bc2e793249323a62 with SHA-1 7feae21a is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/bt/+/15838001

Change-Id: I058b421242fe453d473c965842b74045884baba2