gpio/ich: Add missing spinlock init

As reported by CONFIG_DEBUG_SPINLOCK=y.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NPeter Tyser <ptyser@xes-inc.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

drivers/gpio/gpio-ich.c

@@ -390,6 +390,7 @@ static int ichx_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
+	spin_lock_init(&ichx_priv.lock);
 	res_base = platform_get_resource(pdev, IORESOURCE_IO, ICH_RES_GPIO);
 	ichx_priv.use_gpio = ich_info->use_gpio;
 	err = ichx_gpio_request_regions(res_base, pdev->name,