mips: kernel: convert to DEFINE_SHOW_ATTRIBUTE

Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
Signed-off-by: NLiu Shixin <liushixin2@huawei.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/kernel/segment.c

@@ -46,7 +46,7 @@ static void build_segment_config(char *str, unsigned int cfg)
 		((cfg & MIPS_SEGCFG_EU) >> MIPS_SEGCFG_EU_SHIFT));
 }
 
-static int show_segments(struct seq_file *m, void *v)
+static int segments_show(struct seq_file *m, void *v)
 {
 	unsigned int segcfg;
 	char str[42];
@@ -80,18 +80,7 @@ static int show_segments(struct seq_file *m, void *v)
 
 	return 0;
 }
-
-static int segments_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, show_segments, NULL);
-}
-
-static const struct file_operations segments_fops = {
-	.open		= segments_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(segments);
 
 static int __init segments_info(void)
 {