drivers: bluetooth: slz_hci: Adapt to library BLOBs version 4.2.4

Make HCI driver compatible to the updated versions of the
EFR32 Bluetooth library BLOBs consisting of:
* libbluetooth_controller
* libbgcommon
* librail

Signed-off-by: Markus Fuchs <markus.fuchs@ch.sauter-bc.com>
2 files changed