gpio: ks8695: Change to use DEFINE_SHOW_ATTRIBUTE macro

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-ks8695.c

@@ -282,22 +282,13 @@ static int ks8695_gpio_show(struct seq_file *s, void *unused)
 	return 0;
 }
 
-static int ks8695_gpio_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, ks8695_gpio_show, NULL);
-}
-
-static const struct file_operations ks8695_gpio_operations = {
-	.open		= ks8695_gpio_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(ks8695_gpio);
 
 static int __init ks8695_gpio_debugfs_init(void)
 {
 	/* /sys/kernel/debug/ks8695_gpio */
-	(void) debugfs_create_file("ks8695_gpio", S_IFREG | S_IRUGO, NULL, NULL, &ks8695_gpio_operations);
+	debugfs_create_file("ks8695_gpio", S_IFREG | S_IRUGO, NULL, NULL,
+				&ks8695_gpio_fops);
 	return 0;
 }
 postcore_initcall(ks8695_gpio_debugfs_init);