The vf2pf_init and vf2pf_exit are exactly the same for all VFs
so move them to common and reuse.
Tested-by: NSuman Bangalore Sathyanarayana <sumanx.bangalore.sathyanarayana@intel.com>
Signed-off-by: NTadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>