ipv4: Make the VTI code compile.

This was broken by the backport of the UID routing code.

Test: run_net_test.sh all_tests.sh compiles
Change-Id: I98c7a75fbf3ca55cc57c87c0b9d9810b3bd451d3
Git-commit: 9253e8d2e1f9d54c4116b0652cc84cfe413ac92e
Git-repo: https://android.googlesource.com/kernel/common.git


Signed-off-by: Srinivasarao P <spathi@codeaurora.org>