UefiCpuPkg/RegisterCpuFeaturesLib: Fix build failure.

UefiCpuPkg/RegisterCpuFeaturesLib: Fix build failure.

Build UefiCpuPkg with below configuration:
Architecture(s)  = IA32
Build target     = NOOPT
Toolchain        = VS2015x86

Below error info shows up:
DxeRegisterCpuFeaturesLib.lib(CpuFeaturesInitialize.obj) :
error LNK2001: unresolved external symbol __allmul

Valid mDependTypeStr type only have 5 items, use UINT32 type cast
to fix this error.

Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>