Use Core timing instead of thread

Skylander code tidy ups

Convert c array to std::array and fix comments

Formatting fixes/review changes

Variable comment

Migrate portal to System Impl and code tidy ups

Use struct

Restore review changes

Minor fix to schedule transfer method

Change descriptors to hex and fix comments

Source/Core/Core/System.h

@@ -47,6 +47,10 @@ namespace GPFifo
 {
 class GPFifoManager;
 }
+namespace IOS::HLE::USB
+{
+class SkylanderPortal;
+};
 namespace Memory
 {
 class MemoryManager;
@@ -116,6 +120,7 @@ public:
   Fifo::FifoManager& GetFifo() const;
   GeometryShaderManager& GetGeometryShaderManager() const;
   GPFifo::GPFifoManager& GetGPFifo() const;
+  IOS::HLE::USB::SkylanderPortal& GetSkylanderPortal() const;
   Memory::MemoryManager& GetMemory() const;
   MemoryInterface::MemoryInterfaceState& GetMemoryInterfaceState() const;
   PixelEngine::PixelEngineManager& GetPixelEngine() const;