Kernel: Add support for DualShock 3 controllers

This driver accepts any HID joystick devices but button and axis
mappings will only work on a PS3 controller

userspace/libraries/LibInput/include/LibInput/Joystick.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <stdint.h>
+
+namespace LibInput
+{
+
+	// TODO: not used but here if we ever make controller
+	//       support generating events instead of being polled
+	struct JoystickEvent
+	{
+
+	};
+
+	struct JoystickState
+	{
+		struct Axis
+		{
+			int64_t value;
+			int64_t min;
+			int64_t max;
+		};
+
+		Axis axis[4];
+		bool buttons[32];
+	};
+
+}