[ARM] pxa: fix incorrect gpio type in udc_pxa2xx.h

gpio must be int, not u16, otherwise -1 isn't recognised
by gpio_is_valid().

Signed-off-by: Steve Bennett <[e-mail]>
Signed-off-by: Eric Miao <[e-mail]>

arch/arm/include/asm/mach/udc_pxa2xx.h

···
 	 * here.  Note that sometimes the signals go through inverters...
 	 */
 	bool	gpio_vbus_inverted;
-	u16	gpio_vbus;			/* high == vbus present */
+	int	gpio_vbus;			/* high == vbus present */
 	bool	gpio_pullup_inverted;
-	u16	gpio_pullup;			/* high == pullup activated */
+	int	gpio_pullup;			/* high == pullup activated */
 };