[Bridge] [PATCH] netfilter: bridge: clarify bridge/netfilter message

[David Miller]

From: Stefan Agner <stefan at agner.ch>
Date: Wed, 28 Sep 2016 15:05:28 -0700

> When using bridge without bridge netfilter enabled the message
> displayed is rather confusing and leads to belive that a deprecated
> feature is in use. Use IS_MODULE to be explicit that the message only
> affects users which use bridge netfilter as module and reword the
> message.
> 
> Signed-off-by: Stefan Agner <stefan at agner.ch>

Applied to net-next, thanks.