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2021-03-15T05:06:11.384570Z
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V 447
hyperv/vmbus: Update VMBus version 4.0 and 5.0 support.

Add VMBus protocol version 4.0. and 5.0 to support Windows 10 and newer HyperV hosts.

For VMBus 4.0 and newer HyperV, the netvsc gpadl teardown must be done after vmbus close.

Submitted by:	whu
MFC after:	2 weeks
Sponsored by:	Microsoft

(cherry picked from commit ace5ce7e701e5a98c23f820d4f126e5c265aa667)

Git Hash:   c38b9b80149f463b0c39a677e91b20925ec486d1
Git Author: whu@FreeBSD.org
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