Do not halt control endpoint, control endpoint may not be enabled when
there no host is connected. Yield after buffer is queued to allow the
driver to work.
Tweak pool size and number of buffers to pass the test with high-speed
drivers.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
Simple test for API rules, allocation, queue, and dequeu
of the endpoint requests. USB device controller should not be
connected to the host as this state is not covered by this test.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>