fixing asbits declaration

src/core/device_memory_manager.h

@@ -48,6 +48,7 @@ public:
     ~DeviceMemoryManager();
 
     static constexpr bool HAS_FLUSH_INVALIDATION = true;
+    static constexpr size_t AS_BITS = Traits::device_virtual_bits;
 
     void BindInterface(DeviceInterface* device_inter);
 
@@ -128,8 +129,6 @@ private:
     // Internal helper that performs the update assuming the caller already holds the necessary lock.
     void UpdatePagesCachedCountNoLock(DAddr addr, size_t size, s32 delta);
 
-    static constexpr size_t AS_BITS = Traits::device_virtual_bits;
-
 private:
     static constexpr size_t device_virtual_bits = Traits::device_virtual_bits;
     static constexpr size_t device_as_size = 1ULL << device_virtual_bits;