[NETFILTER]: xt_quota: add missing module aliases

Add missing aliases for ipt_quota and ip6t_quota to make autoload
work.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/netfilter/xt_quota.c

@@ -11,6 +11,8 @@
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Sam Johnston <samj@samj.net>");
+MODULE_ALIAS("ipt_quota");
+MODULE_ALIAS("ip6t_quota");
 
 static DEFINE_SPINLOCK(quota_lock);