BaseTools: Not compare the VOID* difference in the DSC and DEC file

BaseTools: Not compare the VOID* difference in the DSC and DEC file

For structure Pcd, the type defined in the DEC file is the struct name
while if this Pcd used in the DSC file, it should add VOID* keywords
when it have max size info. so this patch filter the type compare for
this case.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>