Hyper-V has added VMBus protocol version 5.3.  Allow Linux guests to
negotiate the new version on version of Hyper-V that support it.
Signed-off-by: NAndrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: NMichael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210416143449.16185-2-parri.andrea@gmail.comSigned-off-by: NWei Liu <wei.liu@kernel.org>