On the platforms with ACPI4.x support, parameter extension
is not always doable, which means only parameter extension
is enabled, einj_param can take effect.

v2->v1: stopping early in einj_get_parameter_address for einj_param
Signed-off-by: NChen Gong <gong.chen@linux.intel.com>
Acked-by: NTony Luck <tony.luck@intel.com>
Signed-off-by: NLen Brown <len.brown@intel.com>