Edits to explain that by default, DISTRO_FEATURES backfills
bluetooth support with Bluez5. If the user wants to use the
Bluez4 feature, they need to backfill consider Bluez5.
(From yocto-docs rev: 4e8b34c8c5841cdc1cae564decae4689ae4f2b11)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>