f95678c BaseTools: correct to use specific arch to generate DSC database

Authored and Committed by Yonghong Zhu 6 years ago
    BaseTools: correct to use specific arch to generate DSC database
    
    Not generic to use 'Common' arch, but use current build arch.
    
    Cc: Liming Gao <liming.gao@intel.com>
    Contributed-under: TianoCore Contribution Agreement 1.1
    Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
    Reviewed-by: Liming Gao <liming.gao@intel.com>