linux-wandboard

atm: br2684: Do not move counters backwards

This snippet has caused several bugs in the past, and I don't see the
point on substracting the skb len from netdev stats.

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David S. Miller <davem@davemloft.net>