[nrf fromtree] bluetooth: common: Kconfig: Add missing dependency for BT_MONITOR

This module calls `log_output_*` functions so it should enable
the `LOG_OUTPUT` Kconfig option explicitly.

Signed-off-by: Andrzej Głąbek <[email protected]>
(cherry picked from commit cb1b1ce)

Author: anangl

subsys/bluetooth/common/Kconfig

@@ -282,6 +282,7 @@ endif # BT_ASSERT
 
 config BT_MONITOR
 	bool
+	select LOG_OUTPUT
 
 choice BT_DEBUG_TYPE
 	prompt "Bluetooth debug type"