Bluetooth: drivers: Convert ST STM32WBA driver to new API

Convert the hci_stm32wba.c driver to the new HCI API. Unlike in most cases,
the devicetree node is already enabled on the SoC level (rather than board
level). This is in order to mirror how the Kconfig option was originally
enabled, i.e. on the SoC level.

Signed-off-by: Johan Hedberg <johan.hedberg@gmail.com>
5 files changed