igb: Add a VF reset handler

Export the igb_vf_reset() helper routine from the PF model to let the
IGBVF model implement its own device reset.

Cc: Akihiko Odaki <akihiko.odaki@daynix.com>
Suggested-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
6 files changed