The build infrastructure should not be adding the drivers subdirectory
to the include path. Fix the legacy uses that depended on that
addition.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
This fixes freeing net_buf without bt_conn_unref call.
As the result, the OTA was broken.
Fixes 8636
Signed-off-by: Mariusz Skamra <mariusz.skamra@codecoup.pl>