scsi: snic: Convert to DEFINE_SHOW_ATTRIBUTE()

Use DEFINE_SHOW_ATTRIBUTE() macro to simplify the code.

Link: https://lore.kernel.org/r/20210331065326.18804-1-dingsenjie@163.comSigned-off-by: dingsenjie <dingsenjie@yulong.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/snic/snic_debugfs.c

@@ -334,25 +334,7 @@ snic_stats_show(struct seq_file *sfp, void *data)
 	return 0;
 }
 
-/*
- * snic_stats_open - Open the stats file for specific host
- *
- * Description:
- * This routine opens a debugfs file stats of specific host
- */
-static int
-snic_stats_open(struct inode *inode, struct file *filp)
-{
-	return single_open(filp, snic_stats_show, inode->i_private);
-}
-
-static const struct file_operations snic_stats_fops = {
-	.owner	= THIS_MODULE,
-	.open	= snic_stats_open,
-	.read	= seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(snic_stats);
 
 static const struct file_operations snic_reset_stats_fops = {
 	.owner = THIS_MODULE,