BaseTools: Fix incremental build bug on DynamicPcd Token Generation

During incremental build, we meet the bug that the different drivers use
the different token for the same DynamicPcd.

Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
(cherry picked from commit 99adfe9f51cbe105ec12f0572571fc85762382fb)
2 files changed