IntelSiliconPkg/IntelPciDeviceSecurity: Use EDKII TCG definition.

Since official TCG definition is added to MdePkg, IntelPciDeviceSecurityDxe
should not define its own TCG event log.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com>
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>