msm: ipa3: Enable and adapt the routing IOCTLs to IPAv3

Routing IOCTLs were disabled previously due to lack of IPAv3
routing support. Now having this support, enable these IOCTLs
and adapt them to IPAv3 design.

Change-Id: Icc9310bef56046de6a3f373db064e311678de792
Signed-off-by: Ghanim Fodi <gfodi@codeaurora.org>
Signed-off-by: Amir Levy <alevy@codeaurora.org>