The function will be used by the I2C core which can be compiled as a
module.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NGrant Likely <grant.likely@linaro.org>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>