Adds few missing zephyr/ prefixes to leftover #include statements that
either got added recently or were using double quote format.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Upon collision either the error code for different procedure
collision or same procedure collision must be transmitted,
which is fixed in this PR. Previously always the error code
for same procedure collision was sent
Signed-off-by: Andries Kruithof <andries.kruithof@nordicsemi.no>