IB/netlink: Add defines for local service requests through netlink

This patch adds netlink defines for local service client, local service
group, local service operations, and related attributes.

Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: John Fleck <john.fleck@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>