Move the network buffer header file from zephyr/net/buf.h to
zephyr/net_buf.h as the implementation now lives outside of the networking
subsystem.
Add (deprecated) zephyr/net/buf.h header to maintain compatibility with old
file path.
Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
Commit adds implementation of the specification
recommendations regarding randomization of
responses on the access layer.
3.7.3.1 Transmitting an Access messages
Signed-off-by: Aleksandr Khromykh <aleksandr.khromykh@nordicsemi.no>