Bluetooth: bpa10x: Fix missing BT_HCIUART dependency

Selecting just BT_HCIUART_H4 is not enough and it also needs to select
BT_HCIUART to avoid this warning:

warning: (BT_HCIBPA10X) selects BT_HCIUART_H4 which has unmet direct
dependencies (NET && BT && BT_HCIUART)

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index c9c5dd0..fcf52fd 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -184,6 +184,7 @@
 config BT_HCIBPA10X
 	tristate "HCI BPA10x USB driver"
 	depends on USB
+	select BT_HCIUART
 	select BT_HCIUART_H4
 	help
 	  Bluetooth HCI BPA10x USB driver.