Update GenFdsGlobalVariable GetAlignment to support G. replace use of local function in Region with updated shared function. Cc: Yonghong Zhu <yonghong.zhu@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Bob C Feng <bob.c.feng@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>