fac0b224c8
check merge-able header as it is supported.
previously we don't support merge-able feature, so non merge-able
header is checked.
Fixes: 13ce5e7eb94f ("virtio: mergeable buffers")
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>