fix(vmm): make MMU bring-up and kernel mappings reliable

Kernel/Source/KernelMain.c

@@ -2,6 +2,7 @@
 #include <Arch/DTB.h>
 #include <VM/PMM.h>
 #include <VM/VMM.h>
+#include <VM/Heap.h>
 #include <OS/Log.h>
 #include <OS/Panic.h>
 
@@ -14,8 +15,9 @@ void KernelMain(Bootinfo* bootinfo) {
     VMBootMemoryMap bootMap = {0};
     bootMap.reservedCount = 0;
     DTBParse(bootinfo->dtb, &bootMap);
-    PMMInitialize(&bootMap, bootinfo);
+    PMMInitialize(&bootMap);
     VMMInitialize(&bootMap, bootinfo);
+    HeapInitialize();
 
     OSLog("Kernel initialized.\n");
 }