gpu: host1x: Use DEFINE_SHOW_ATTRIBUTE to simplify debugfs code

Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the debugfs code for
the status and status_all entries. No functional change.

Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

drivers/gpu/host1x/debug.c

@@ -140,7 +140,7 @@ static void show_all(struct host1x *m, struct output *o, bool show_fifo)
 	}
 }
 
-static int host1x_debug_show_all(struct seq_file *s, void *unused)
+static int host1x_debug_all_show(struct seq_file *s, void *unused)
 {
 	struct output o = {
 		.fn = write_to_seqfile,
@@ -151,6 +151,7 @@ static int host1x_debug_show_all(struct seq_file *s, void *unused)
 
 	return 0;
 }
+DEFINE_SHOW_ATTRIBUTE(host1x_debug_all);
 
 static int host1x_debug_show(struct seq_file *s, void *unused)
 {
@@ -163,30 +164,7 @@ static int host1x_debug_show(struct seq_file *s, void *unused)
 
 	return 0;
 }
-
-static int host1x_debug_open_all(struct inode *inode, struct file *file)
-{
-	return single_open(file, host1x_debug_show_all, inode->i_private);
-}
-
-static const struct file_operations host1x_debug_all_fops = {
-	.open = host1x_debug_open_all,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
-
-static int host1x_debug_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, host1x_debug_show, inode->i_private);
-}
-
-static const struct file_operations host1x_debug_fops = {
-	.open = host1x_debug_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(host1x_debug);
 
 static void host1x_debugfs_init(struct host1x *host1x)
 {