Bluetooth: Add BT_PHY socket option

This adds BT_PHY socket option (read-only) which can be used to read
the PHYs in use by the underline connection.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
5 files changed