gpio: adp5588-gpio: gpio_start must be signed

Common code interprets this as a signed value (a negative value is used to
request dynamic ID allocation), so make sure the platform data has proper
types to support that.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/i2c/adp5588.h

@@ -141,9 +141,9 @@ struct adp5588_kpad_platform_data {
 };
 
 struct adp5588_gpio_platform_data {
-	unsigned gpio_start;		/* GPIO Chip base # */
-	unsigned irq_base;		/* interrupt base # */
-	unsigned pullup_dis_mask;	/* Pull-Up Disable Mask */
+	int gpio_start;		/* GPIO Chip base # */
+	unsigned irq_base;	/* interrupt base # */
+	unsigned pullup_dis_mask; /* Pull-Up Disable Mask */
 	int	(*setup)(struct i2c_client *client,
 				int gpio, unsigned ngpio,
 				void *context);