ARM: OMAP: PM: Change to use DEFINE_SHOW_ATTRIBUTE macro

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/pm.c

@@ -532,18 +532,7 @@ static int omap_pm_debug_show(struct seq_file *m, void *v)
 	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)
 {