msm: Enable raw tables in iptable.

Enable ip tables raw table for v4,v6.
- This is used by BandwidthController in netd to collect
active network statistics.
- msm7627a: Enable NF_FILTER, NF_MANGLE configs for ip6 tables

CRs-Fixed: 381133
Change-Id: I9138771b6898a90bb8b069bf186cc036b24f4e70
Signed-off-by: Siddartha Pothapragada <spotha@codeaurora.org>