drivers: bluetooth: hci: Fix stm32wb BLE behavior

Enabling BT_HCI_SETUP for STM32WB55 to have a
correct and proper initialization procedure to fix
#75318 issue

Signed-off-by: Alessandro Manganaro <alessandro.manganaro@st.com>
(cherry picked from commit 4fc7724)

drivers/bluetooth/hci/Kconfig

@@ -63,6 +63,7 @@ config BT_STM32_IPM
 	depends on DT_HAS_ST_STM32WB_RF_ENABLED
 	select USE_STM32_HAL_CORTEX
 	select HAS_STM32LIB
+	select BT_HCI_SETUP
 	help
 	  TODO