Kernel: Add more infrastructure to support different memory layouts

This adds some structures necessary to support multiple memory regions
in the future. It also adds support for different system memory types
and the new linear heap mapping at 0x30000000.

src/core/memory.h

@@ -107,6 +107,11 @@ enum : VAddr {
     TLS_AREA_VADDR     = 0x1FF82000,
     TLS_AREA_SIZE      = 0x00030000, // Each TLS buffer is 0x200 bytes, allows for 300 threads
     TLS_AREA_VADDR_END = TLS_AREA_VADDR + TLS_AREA_SIZE,
+
+    /// Equivalent to LINEAR_HEAP_VADDR, but expanded to cover the extra memory in the New 3DS.
+    NEW_LINEAR_HEAP_VADDR     = 0x30000000,
+    NEW_LINEAR_HEAP_SIZE      = 0x10000000,
+    NEW_LINEAR_HEAP_VADDR_END = NEW_LINEAR_HEAP_VADDR + NEW_LINEAR_HEAP_SIZE,
 };
 
 u8 Read8(VAddr addr);