mfd: tc3589x: Enforce device-tree only mode

All systems using the TC3589x multifunction expander uses
devicetree, so don't clutter the place with a lot of
and assume it is there.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/gpio/gpio-tc3589x.c

@@ -260,10 +260,7 @@ static int tc3589x_gpio_probe(struct platform_device *pdev)
 	tc3589x_gpio->chip.ngpio = tc3589x->num_gpio;
 	tc3589x_gpio->chip.dev = &pdev->dev;
 	tc3589x_gpio->chip.base = -1;
-
-#ifdef CONFIG_OF_GPIO
 	tc3589x_gpio->chip.of_node = np;
-#endif
 
 	/* Bring the GPIO module out of reset */
 	ret = tc3589x_set_bits(tc3589x, TC3589x_RSTCTRL,