net: socket: rename SKB_DROP_REASON_SOCKET_FILTER

net: socket: rename SKB_DROP_REASON_SOCKET_FILTER

[ Upstream commit 364df53c081d93fcfd6b91085ff2650c7f17b3c7 ]

Rename SKB_DROP_REASON_SOCKET_FILTER, which is used
as the reason of skb drop out of socket filter before
it's part of a released kernel. It will be used for
more protocols than just TCP in future series.

Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/all/20220127091308.91401-2-imagedong@tencent.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>