file-win32: Support .bdrv_co_create

This adds the .bdrv_co_create driver callback to file-win32, which
enables image creation over QMP.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
1 file changed