BaseTools: Fix the bug for Pcd used in command line's override

V2: remove the not used parameter i

Fix the bug for Pcd used in command line not override the Pcd used
in the [component] driver's sub-section.

Case:
DSC file:
[PcdsFixedAtBuild]
TokenSpaceGuid.PcdTest

[Components]
 TestPkg/TestDriver.inf {
  <PcdsFixedAtBuild>
  TokenSpaceGuid.PcdTest|"b"
  }

build command with --pcd TokenSpaceGuid.PcdTest="AAAABB"

Then we found the Pcd value in the AutoGen.c file is incorrect,
because of the incorrect logic that use the pcd in the [component]
section to re-override it.

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

BaseTools/Source/Python/AutoGen/AutoGen.py

@@ -2120,6 +2120,13 @@ class PlatformAutoGen(AutoGen):
         if Module in self.Platform.Modules:
             PlatformModule = self.Platform.Modules[str(Module)]
             for Key  in PlatformModule.Pcds:
+                if GlobalData.BuildOptionPcd:
+                    for pcd in GlobalData.BuildOptionPcd:
+                        (TokenSpaceGuidCName, TokenCName, FieldName, pcdvalue, _) = pcd
+                        if (TokenCName, TokenSpaceGuidCName) == Key and FieldName =="":
+                            PlatformModule.Pcds[Key].DefaultValue = pcdvalue
+                            PlatformModule.Pcds[Key].PcdValueFromComm = pcdvalue
+                            break
                 Flag = False
                 if Key in Pcds:
                     ToPcd = Pcds[Key]