Clean up occurrences of "#if IS_ENABLED(CONFIG_FOO)" an replace
with classical "#if defined(CONFIG_FOO)".
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Add new USB device controller API and nRF USBD controller driver.
The new UDC API brings support for multiple instances and asynchronous
transfer model, transfers use net_buf and store methadata in the
user data area.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>