Correct display of bhyve SMBIOS UUIDs with dmidecode by bumping the version.

The mixed little/big-endianness of SMBIOS UUIDs was clarified in v2.6
of the SMBIOS spec. dmidecode uses the reported version of SMBIOS to
determine the layout and what to byte-swap.

bhyve's SMBIOS reported as 2.4 though it implemented the 2.6-style of
memory layout. This resulted in dmidecode reporting a different
UUID than one passed in via the -U option.

Fix by exporting a version of 2.6.

Reviewed by:	tychon
Reported by:	julian
MFC after:	1 day


git-svn-id: svn+ssh://svn.freebsd.org/base/head@272007 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f