[qca-nss-ecm] Do not process unconfirmed connections.

The unconfirmed connections may be dropped by linux
after the ECM post routing hook. ECM's post routing hook
priority is "NF_IP_PRI_NAT_SRC + 1" which is before the
NF_IP_PRI_CONNTRACK_CONFIRM (INT_MAX, which is 2^31-1).

Change-Id: I407dccba1baece45fc90bad03b65b40c2c244564
Signed-off-by: Murat Sezgin <msezgin@codeaurora.org>
4 files changed