arm_interface: Replace kernel vm_manager include with a forward declaration

Avoids an unnecessary inclusion and also uncovers three places where
indirect inclusions were relied upon, which allows us to also resolve
those.

src/yuzu/debugger/wait_tree.cpp

@@ -15,6 +15,7 @@
 #include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/timer.h"
 #include "core/hle/kernel/wait_object.h"
+#include "core/memory.h"
 
 WaitTreeItem::WaitTreeItem() = default;
 WaitTreeItem::~WaitTreeItem() = default;