vhost_vdpa: tell vqs about the negotiated

mainline inclusion
from mainline-v6.4-rc6
commit 376daf31
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I86ITO
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=376daf317753ccb6b1ecbdece66018f7f6313a7f



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As is done in the net, iscsi, and vsock vhost support, let the vdpa vqs
know about the features that have been negotiated.  This allows vhost
to more safely make decisions based on the features, such as when using
PACKED vs split queues.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230424225031.18947-2-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: jiangdongxu <jiangdongxu1@huawei.com>