BaseTools: Enable Multiple Process AutoGen

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1875

Assign the Module AutoGen tasks into multiple
sub process.

Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Liming Gao <liming.gao@intel.com>

BaseTools/Source/Python/AutoGen/GenC.py

@@ -1472,8 +1472,8 @@ def CreateModuleEntryPointCode(Info, AutoGenC, AutoGenH):
 
     if Info.ModuleType in [SUP_MODULE_PEI_CORE, SUP_MODULE_DXE_CORE, SUP_MODULE_SMM_CORE, SUP_MODULE_MM_CORE_STANDALONE]:
         if Info.SourceFileList:
-          if NumEntryPoints != 1:
-              EdkLogger.error(
+            if NumEntryPoints != 1:
+                EdkLogger.error(
                   "build",
                   AUTOGEN_ERROR,
                   '%s must have exactly one entry point' % Info.ModuleType,