Merge "legacy: Const-ify hci packet transfer interface" am: 534ca4b9 am:...

Merge "legacy: Const-ify hci packet transfer interface" am: 534ca4b9 am: 69ae0c2c am: f88db912 am: 1335a043

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1869991

Change-Id: I04b21866da10e7786e862047873d88954ddac785