Revert "bridge: Forward reserved group addresses if !STP"

This reverts commit 1e253c3b8a1aeed51eef6fc366812f219b97de65.

It breaks 802.3ad bonding inside of a bridge.

The commit was meant to support transport bridging, and specifically
virtual machines bridged to an ethernet interface connected to a
switch port wiht 802.1x enabled.

But this isn't the way to do it, it breaks too many other things.

Signed-off-by: David S. Miller <[e-mail]>

net/bridge/br_input.c

···
 			goto drop;
 
 		/* If STP is turned off, then forward */
-		if (p->br->stp_enabled == BR_NO_STP)
+		if (p->br->stp_enabled == BR_NO_STP && dest[5] == 0)
 			goto forward;
 
 		if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev,