Use an enum for the interface type instead of using the SVC protocol values directly. Suggested-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Reviewed-by: Alex Elder <elder@linaro.org> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Sandeep Patil <sspatil@google.com> Reviewed-by: Patrick Titiano <ptitiano@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>