This driver cannot build when DM_USB_GADGET is enabled as both options
control building of files that use the same global namespace and
functionality. In this case make CI_UDC depend on DM_USB_GADGET being
disabled as non-DM support is the legacy choice.
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@kernel.org>