[nrf fromlist] boards: nrf5340dk_nrf5340_cpuapp: Add BT_HCI_VS explicit enable.

Add explicit BT_HCI_VS enable for nRF5340 application core.
It does not have Bluetooth Controller so dependecies will
not be solved automatically.

Upstream PR: zephyrproject-rtos/zephyr#47635

Signed-off-by: Kamil Gawor <[email protected]>
Signed-off-by: Torsten Rasmussen <[email protected]>

Author: Kamil Gawor

boards/arm/nrf5340dk_nrf5340/Kconfig.defconfig

@@ -128,6 +128,11 @@ endchoice
 config HEAP_MEM_POOL_SIZE
 	default 4096 if BT_RPMSG
 
+# Application core does not have dependencies to the Controller.
+# BT_HCI_VS must be explicitly enabled.
+config BT_HCI_VS
+	default y if BT
+
 endif #  BOARD_NRF5340DK_NRF5340_CPUAPP || BOARD_NRF5340DK_NRF5340_CPUAPP_NS
 
 if BOARD_NRF5340DK_NRF5340_CPUNET