kobject: use the proper printk level for kobject error

Thanks to Jean Delvare <khali@linux-fr.org> for pointing it out to me.

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

lib/kobject.c

@@ -202,12 +202,12 @@ int kobject_shadow_add(struct kobject * kobj, struct dentry *shadow_parent)
 
 		/* be noisy on error issues */
 		if (error == -EEXIST)
-			printk("kobject_add failed for %s with -EEXIST, "
-			       "don't try to register things with the "
-			       "same name in the same directory.\n",
+			printk(KERN_ERR "kobject_add failed for %s with "
+			       "-EEXIST, don't try to register things with "
+			       "the same name in the same directory.\n",
 			       kobject_name(kobj));
 		else
-			printk("kobject_add failed for %s (%d)\n",
+			printk(KERN_ERR "kobject_add failed for %s (%d)\n",
 			       kobject_name(kobj), error);
 		dump_stack();
 	}