usb: gadget: lpc32xx_udc: Convert to DEFINE_SHOW_ATTRIBUTE

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Acked-by: Vladimir Zapolskiy <[e-mail]>
Signed-off-by: Qinglang Miao <[e-mail]>
Signed-off-by: Felipe Balbi <[e-mail]>

drivers/usb/gadget/udc/lpc32xx_udc.c

···
 	}
 }
 
-static int proc_udc_show(struct seq_file *s, void *unused)
+static int udc_show(struct seq_file *s, void *unused)
 {
 	struct lpc32xx_udc *udc = s->private;
 	struct lpc32xx_ep *ep;
···
 	return 0;
 }
 
-static int proc_udc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, proc_udc_show, PDE_DATA(inode));
-}
-
-static const struct file_operations proc_ops = {
-	.owner		= THIS_MODULE,
-	.open		= proc_udc_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(udc);
 
 static void create_debug_file(struct lpc32xx_udc *udc)
 {
-	udc->pde = debugfs_create_file(debug_filename, 0, NULL, udc, &proc_ops);
+	udc->pde = debugfs_create_file(debug_filename, 0, NULL, udc, &udc_fops);
 }
 
 static void remove_debug_file(struct lpc32xx_udc *udc)