pinctrl: da9062: Fix error gpiolib.h path

pinctrl: da9062: Fix error gpiolib.h path

gcc 7.4.0 build fails:

drivers/pinctrl/pinctrl-da9062.c:28:10: fatal error: ../gpio/gpiolib.h: No such file or directory
 #include <../gpio/gpiolib.h>
          ^~~~~~~~~~~~~~~~~~~

Fix this wrong include path.

Fixes: 56cc3af4e8c8 ("pinctrl: da9062: add driver support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20200228063429.47528-1-yuehaibing@huawei.com
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>