buffer_cache: Bump usable address space to 40bits

* Fixes crashes in games that use the upper region of user area

Author: raphaelthegreat

src/video_core/buffer_cache/buffer_cache.h

@@ -42,7 +42,7 @@ class BufferCache {
 
     struct Traits {
         using Entry = BufferId;
-        static constexpr size_t AddressSpaceBits = 39;
+        static constexpr size_t AddressSpaceBits = 40;
         static constexpr size_t FirstLevelBits = 14;
         static constexpr size_t PageBits = CACHING_PAGEBITS;
     };

src/video_core/buffer_cache/memory_tracker_base.h

@@ -14,7 +14,7 @@ namespace VideoCore {
 
 class MemoryTracker {
 public:
-    static constexpr size_t MAX_CPU_PAGE_BITS = 39;
+    static constexpr size_t MAX_CPU_PAGE_BITS = 40;
     static constexpr size_t HIGHER_PAGE_BITS = 22;
     static constexpr size_t HIGHER_PAGE_SIZE = 1ULL << HIGHER_PAGE_BITS;
     static constexpr size_t HIGHER_PAGE_MASK = HIGHER_PAGE_SIZE - 1ULL;