Add XFRM-I support to XfrmController

This patch adds support for creating and managing XFRM interfaces,
adding xfrm_if_id parameters to all relevant netlink calls.

This is part of a patch set to enable XFRM-I support, with automatic
fallbacks to VTI in XfrmController (2/3)

Bug: 77856928
Test: Xfrm, Binder tests updated, passing
Change-Id: I09869e6a0000384c9c4d0aef1de4d5434c33374a
7 files changed