ArmPlatformPkg: Introduce ArmPlatformInitialize() function

This function is responsible to handle all the specific platform code that must
be run in secure world to initialize some controllers.
   

ArmPlatformPkg/Sec: Move the L2x0 initialization to ArmPlatformLib
    
The L2x0 controller must be initialized in secure world. Move its initialization
into the ArmPlatformInitialize() of the Cortex A9x4 Core Tile PlatformLib.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11476 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/Include/Library/ArmPlatformLib.h

@@ -67,6 +67,18 @@ VOID ArmPlatformIsMemoryInitialized(VOID);
 **/
 VOID ArmPlatformInitializeBootMemory(VOID);
 
+/**
+  Initialize controllers that must setup at the early stage
+
+  Some peripherals must be initialized in Secure World.
+  For example, some L2x0 requires to be initialized in Secure World
+
+**/
+VOID
+ArmPlatformInitialize (
+  VOID
+  );
+
 /**
   Initialize the system (or sometimes called permanent) memory