Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/mach-omap1/pm.c b/arch/arm/mach-omap1/pm.c
index 3e1de14..d068958 100644
--- a/arch/arm/mach-omap1/pm.c
+++ b/arch/arm/mach-omap1/pm.c
@@ -532,29 +532,15 @@
 	return 0;
 }
 
-static int omap_pm_debug_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, omap_pm_debug_show,
-				&inode->i_private);
-}
-
-static const struct file_operations omap_pm_debug_fops = {
-	.open		= omap_pm_debug_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(omap_pm_debug);
 
 static void omap_pm_init_debugfs(void)
 {
 	struct dentry *d;
 
 	d = debugfs_create_dir("pm_debug", NULL);
-	if (!d)
-		return;
-
-	(void) debugfs_create_file("omap_pm", S_IWUSR | S_IRUGO,
-					d, NULL, &omap_pm_debug_fops);
+	debugfs_create_file("omap_pm", S_IWUSR | S_IRUGO, d, NULL,
+			    &omap_pm_debug_fops);
 }
 
 #endif /* CONFIG_DEBUG_FS */