hikey: Add a HIDL HAL for Bluetooth

The hikey HCI tty driver needs FIONREAD to be called before every read.

Add an HciPacketizerHikey class to make sure that FIONREAD is called.

Test: Bluetooth starts/stops, VtsHalBluetoothV1_0TargetTest passes
Change-Id: I9e9260337108c93cae66b89e21c3561916f42f54
9 files changed