config write handlers should be idempotent.
So no need for complex range checks: a simple
one checking that we are touching the relevant capability
will do.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Extract range functions from pci.h. These will be used by later patches
by non-PCI devices. Adjust current users.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
(cherry picked from commit bf1b007123)
