ArmPkg/ArmMmuLib: Use function pointer type

mReplaceLiveEntryFunc is a function pointer but assigned as a VOID*
pointer:

  mReplaceLiveEntryFunc = *(VOID **)GET_GUID_HOB_DATA (Hob);

This leads to the Visual Studio warning:

  nonstandard extension, function/data pointer conversion in
  expression

This change updates the assignment to avoid using a data pointer and
defines a type for the function pointer to succinctly and accurately
refer to the type when it is used in the library code.

Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>

ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuPeiLibConstructor.c

@@ -13,6 +13,7 @@
 #include <Library/CacheMaintenanceLib.h>
 #include <Library/DebugLib.h>
 #include <Library/HobLib.h>
+#include "ArmMmuLibInternal.h"
 
 EFI_STATUS
 EFIAPI
@@ -21,9 +22,9 @@ ArmMmuPeiLibConstructor (
   IN CONST EFI_PEI_SERVICES     **PeiServices
   )
 {
-  extern UINT32  ArmReplaceLiveTranslationEntrySize;
-  VOID           *ArmReplaceLiveTranslationEntryFunc;
-  VOID           *Hob;
+  extern UINT32                       ArmReplaceLiveTranslationEntrySize;
+  ARM_REPLACE_LIVE_TRANSLATION_ENTRY  ArmReplaceLiveTranslationEntryFunc;
+  VOID                                *Hob;
 
   EFI_FV_FILE_INFO  FileInfo;
   EFI_STATUS        Status;