KMI patch for devel branch on bahadir's repo.

Important points:
----------------
1. Works fine for pb926 + qemu.

2. Scan code logic for kryboard is not complete.
We just have generic keys and shift working.

3. Mouse scancodes are collected but not decoded.

4. Right now we are doing enable_irq(), just before we go for waiting
again for new irqs. This is not correct but we had latency issues.
This needs to be fixed immediately.

5. Also it seems like the notify_clot count should be an atomic
variable. Needs to be discussed.

include/l4/generic/cap-types.h

@@ -46,6 +46,8 @@
  */
 #define CAP_DEVTYPE_TIMER		1
 #define CAP_DEVTYPE_UART		2
+#define CAP_DEVTYPE_KEYBOARD           3
+#define CAP_DEVTYPE_MOUSE              4
 #define CAP_DEVTYPE_OTHER		0xF
 #define CAP_DEVTYPE_MASK		0xFFFF
 #define CAP_DEVNUM_MASK			0xFFFF0000

include/l4/generic/irq.h

@@ -47,6 +47,9 @@ struct irq_desc {
 	/* Notification slot for this irq */
 	int task_notify_slot;
 
+	/* If user will ack this irq */
+	int user_ack;
+
 	/* Waitqueue head for this irq */
 	struct waitqueue_head wqh_irq;