ARM: OMAP1: omap1/pm.c build fix

Build fix:

arch/arm/mach-omap1/pm.c: In function 'omap_pm_init':
arch/arm/mach-omap1/pm.c:720: warning: passing argument 2 of 'sysfs_create_file' from incompatible pointer type
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/pm.c

@@ -717,7 +717,7 @@ static int __init omap_pm_init(void)
 #endif
 
 #ifdef CONFIG_OMAP_32K_TIMER
-	error = sysfs_create_file(power_kobj, &sleep_while_idle_attr);
+	error = sysfs_create_file(power_kobj, &sleep_while_idle_attr.attr);
 	if (error)
 		printk(KERN_ERR "sysfs_create_file failed: %d\n", error);
 #endif