Removed deprecated native_posix as test platform.
Added unique sim_ids for tests with the psa as a overlay.
Fixed clang-format issues.
Signed-off-by: Ingar Kulbrandstad <ingar.kulbrandstad@nordicsemi.no>
When a synchronous API is used, the content of `buf` will not be
valid by the time the thread that called the synchronous API is woken up
again.
Therefore, the simplest way to solve this is when a user allocates the
buffer which will be filled up with the content of the buffer passed to
the model callback.
Signed-off-by: Pavel Vasilyev <pavel.vasilyev@nordicsemi.no>