CryptoPkg/BaseCryptLib: Use cmp-operator for non-Boolean comparisons

CryptoPkg/BaseCryptLib: Use cmp-operator for non-Boolean comparisons

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2027

Refer to CSS_2_1 5.7.2.1 "Non-Boolean comparisons must use a
compare operator (==, !=, >, < >=, <=).", use compare operator
for the non-boolean comparisons.

Cc: Jian Wang <jian.j.wang@intel.com>
Cc: Ting Ye <ting.ye@intel.com>
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>