ArmVirtPkg/PrePi: remove dependency on ArmPlatformLib

Remove the pointless dependency on ArmPlatformLib: none of the code we
call from it actually does anything useful.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

ArmVirtPkg/PrePi/PrePi.c

@@ -13,6 +13,7 @@
 **/
 
 #include <PiPei.h>
+#include <Pi/PiBootMode.h>
 
 #include <Library/PrePiLib.h>
 #include <Library/PrintLib.h>
@@ -85,7 +86,7 @@ PrePiMain (
   BuildCpuHob (PcdGet8 (PcdPrePiCpuMemorySize), PcdGet8 (PcdPrePiCpuIoSize));
 
   // Set the Boot Mode
-  SetBootMode (ArmPlatformGetBootMode ());
+  SetBootMode (BOOT_WITH_FULL_CONFIGURATION);
 
   // Initialize Platform HOBs (CpuHob and FvHob)
   Status = PlatformPeim ();
@@ -123,9 +124,6 @@ CEntryPoint (
 {
   UINT64   StartTimeStamp;
 
-  // Initialize the platform specific controllers
-  ArmPlatformInitialize (MpId);
-
   if (PerformanceMeasurementEnabled ()) {
     // Initialize the Timer Library to setup the Timer HW controller
     TimerConstructor ();