This add CONFIG_BLUETOOTH_DEBUG_LOG which depends on SYS_LOG since the
later can actually use either CONFIG_PRINTK or CONFIG_STDOUT_CONSOLE.
Change-Id: Ib2974d1331f6c91d119a218ec95e8bf01069377b
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>