CryptoPkg/Library/Include: Allow CPU specific defines to be predefined

CryptoPkg/Library/Include: Allow CPU specific defines to be predefined

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3308

The EDK II Build Specifications do not restrict the set of
CPU architectures that can be supported.  Remove places in
the EDK II that assume a fixed set of CPU architectures.

Update SIXTY_FOUR_BIT and THIRTY_TWO_BIT defines in the
CryptoPkg to allow one of them to be predefined on the EDK II
build command line using /D flag or in DSC file [BuildOptions]
sections.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Xiaoyu Lu <xiaoyux.lu@intel.com>
Cc: Guomin Jiang <guomin.jiang@intel.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Abner Chang <abner.chang@hpe.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Abner Chang <abner.chang@hpe.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>