MdePkg: Add missing Cache ID (in)valid define

MdePkg: Add missing Cache ID (in)valid define

Bugzilla: 3697 (https://bugzilla.tianocore.org/show_bug.cgi?id=3697)

Add Cache ID valid/invalid defines to Acpi64.h which were not initially
added when the CacheIdValid field was added to
EFI_ACPI_6_4_PPTT_STRUCTURE_CACHE_FLAGS.

Signed-off-by: Chris Jones <christopher.jones@arm.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>