Vlv2TbltDevicePkg/dsc/fdf: use Tcg2 instead of TrEE.

TrEE is deprecated. We need use Tcg2.

Cc: David Wei <david.wei@intel.com>
Cc: Mang Guo <mang.guo@intel.com>
Cc: Chao B Zhang <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Chao B Zhang <chao.b.zhang@intel.com>
Reviewed-by: Mang Guo <mang.guo@intel.com>