BaseTools: Fix a bug for BOOLEAN type value in Asbuilt inf

When the PCD value is set to TRUE or FALSE, while it is not exchanged to
its int value, it cause error in the function int(Pcd.DefaultValue, 0).

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>

BaseTools/Source/Python/AutoGen/AutoGen.py

@@ -3925,6 +3925,13 @@ class ModuleAutoGen(AutoGen):
                 else:
                     continue
                 PcdValue = ''
+                if Pcd.DatumType == 'BOOLEAN':
+                    BoolValue = Pcd.DefaultValue.upper()
+                    if BoolValue == 'TRUE':
+                        Pcd.DefaultValue = '1'
+                    elif BoolValue == 'FALSE':
+                        Pcd.DefaultValue = '0'
+
                 if Pcd.DatumType != 'VOID*':
                     HexFormat = '0x%02x'
                     if Pcd.DatumType == 'UINT16':