devices: vhost-user: net: Support VVU
devices: vhost-user: net: Support VVU

BUG=b:213531892
TEST=todo

Change-Id: I0737b85f19295e05e1c0ed073205de0bd2e7e70b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3354273
Reviewed-by: Alexandre Courbot <301cd6a3ea50a894b4b51e385c5eb12b9a4ffc0c@chromium.org>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Commit-Queue: Keiichi Watanabe <815e4e8f7c92a23424d7c3f51ead622bcedbc720@chromium.org>

google/crosvm,google/crosvm,google/crosvm,google/crosvm