Bluetooth: Use macros for connectionless slave broadcast features

Add the LMP feature constants for connectionless slave broadcast
and use them for capability testing.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

diff --cc include/net/bluetooth/hci.h
Simple merge

diff --cc include/net/bluetooth/hci_core.h
Simple merge

diff --cc net/bluetooth/hci_core.c
Simple merge