Little rewrite of HID input (#723)

* change hid sharedmem writing to use structures

Ryujinx.HLE/DeviceMemory.cs

@@ -1,5 +1,6 @@
 using ChocolArm64.Memory;
 using System;
+using System.Runtime.InteropServices;
 
 namespace Ryujinx.HLE
 {
@@ -98,6 +99,11 @@ namespace Ryujinx.HLE
             *((ulong*)(_ramPtr + position)) = value;
         }
 
+        public unsafe void WriteStruct<T>(long position, T value)
+        {
+            Marshal.StructureToPtr(value, (IntPtr)(_ramPtr + position), false);
+        }
+
         public void FillWithZeros(long position, int size)
         {
             int size8 = size & ~(8 - 1);
@@ -180,4 +186,4 @@ namespace Ryujinx.HLE
             MemoryManagement.Free(RamPointer);
         }
     }
-}
+}