Fixes the following W=1 kernel build warning(s): drivers/soc/rockchip/io-domain.c:57: warning: Cannot understand * @supplies: voltage settings matching the register bits. Signed-off-by: Lee Jones <lee.jones@linaro.org> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: Doug Anderson <dianders@chromium.org> Cc: linux-rockchip@lists.infradead.org Link: https://lore.kernel.org/r/20201103152838.1290217-6-lee.jones@linaro.org Signed-off-by: Heiko Stuebner <heiko@sntech.de>