Vlv2TbltDevicePkg: Add the missing SMBIOS bits

fwupd 1.2.10 checks the bit 3 of BIOS Characteristics Extension Byte 2,
i.e. UefiSpecificationSupported, to determine if the system supports
UEFI or not. Since the bit was missing, fwupd failed to load uefi
plugin.

This commit adds 3 bits of BIOS Characteristics Extension Byte 2:
TargetContentDistributionEnabled, UefiSpecificationSupported, and
VirtualMachineSupported to complete the table.

Cc: Zailiang Sun <zailiang.sun@intel.com>
Cc: Yi Qian <yi.qian@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>