MdeModulePkg: Add ARM/Aarch64 support which were missing

MdeModulePkg: Add ARM/Aarch64 support which were missing

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2382

Add ARM/Aarch64 which were missing to VALID_ARCHITECTURES
 in LzmaCustomDecompressLib.inf

Cc: Liming Gao <liming.gao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>