i40e: Wait for pending VF reset in VF set callbacks

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2215498
Tested: Using reproducer described in bugzilla

Commits:

df84f0ce569d ("i40e: Add helper for VF inited state check with timeout")
efb6f4a35954 ("i40e: Wait for pending VF reset in VF set callbacks")

Signed-off-by: Ivan Vecera ivecera@redhat.com