dm: imx: i2c: Use gpio_request() to request GPIOs
GPIOs should be requested before use. Without this, driver model will not permit the GPIO to be used. Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: NSimon Glass <sjg@chromium.org> Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il> Acked-by: NIgor Grinberg <grinberg@compulab.co.il>
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