ArmPkg: Create MpCoreInfo PPI and HOB to describe CPU Cores on a MPCore platform

These info are:
- ClusterId, CoreId
- MailBox Set/Get/Clear address



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12423 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/PrePi/PrePi.c

@@ -131,6 +131,9 @@ PrePiMain (
   // Declare the Global Variable HOB
   BuildGlobalVariableHob (GlobalVariableBase, FixedPcdGet32 (PcdPeiGlobalVariableSize));
 
+  //TODO: Call CpuPei as a library
+  BuildCpuHob (PcdGet8 (PcdPrePiCpuMemorySize), PcdGet8 (PcdPrePiCpuIoSize));
+
   // Set the Boot Mode
   SetBootMode (ArmPlatformGetBootMode ());