ArmPkg: Introduce ArmSetLowVectors/ArmSetHighVectors functions

These functions set/clear the SCTLR.V bit that controls the location
of the Vector Table.
This commit also forces the SCTLR.V to be clear when the VBAR register
is set.

Note: The original fix has been proposed by Eugene Cohen (HP).




git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11739 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Include/Library/ArmLib.h

@@ -346,7 +346,19 @@ EFIAPI
 ArmDisableBranchPrediction (
   VOID
   );
-  
+
+VOID
+EFIAPI
+ArmSetLowVectors (
+  VOID
+  );
+
+VOID
+EFIAPI
+ArmSetHighVectors (
+  VOID
+  );
+
 VOID
 EFIAPI
 ArmDataMemoryBarrier (