gre: add missing .api edits

gre: add missing .api edits

The previous edit has added a new field to a typedef.
That change is backward-compatible for PAPI users,
but not backward compatible for direct binary API users.

This change adds two edits that should have been there already:

+ Copyright year bump.
+ API version bump.
  - PAPI users point of view, so bumping minor version only.

Type: fix
Fixes: e5b94dded0dfd7258d5fd0f4ef897d9ccb48715b

Change-Id: Ib85f457254e38a8e5999a078855848e6a5cfda13
Signed-off-by: Vratko Polak <vrpolak@cisco.com>