gpio: adp5588 - use "unsigned" for the setup and teardown callbacks

to comply with the rest of the GPIO drivers.

Signed-off-by: Jean-Francois Dagenais <[e-mail]>
Acked-by: Michael Hennerich <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

include/linux/i2c/adp5588.h

···
 	unsigned irq_base;	/* interrupt base # */
 	unsigned pullup_dis_mask; /* Pull-Up Disable Mask */
 	int	(*setup)(struct i2c_client *client,
-				int gpio, unsigned ngpio,
+				unsigned gpio, unsigned ngpio,
 				void *context);
 	int	(*teardown)(struct i2c_client *client,
-				int gpio, unsigned ngpio,
+				unsigned gpio, unsigned ngpio,
 				void *context);
 	void	*context;
 };