VM_Manager: Align allocated memory to 256bytes

This commit ensures that all backing memory allocated for the Guest CPU
is aligned to 256 bytes. This due to how gpu memory works and the heavy
constraints it has in the alignment of physical memory.

src/core/hle/kernel/code_set.h

@@ -8,6 +8,7 @@
 #include <vector>
 
 #include "common/common_types.h"
+#include "core/hle/kernel/physical_memory.h"
 
 namespace Kernel {
 
@@ -77,7 +78,7 @@ struct CodeSet final {
     }
 
     /// The overall data that backs this code set.
-    std::vector<u8> memory;
+    Kernel::PhysicalMemory memory;
 
     /// The segments that comprise this code set.
     std::array<Segment, 3> segments;