The global variable has a common name that can conflict with other
TCG modules. For example, Tcg2Dxe has a similarly named global that
is of type EFI_TCG2_PROTOCOL instead of EFI_TCG2_PROTOCOL*.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>