[ARM] S3C6400: Add <mach/tick.h>

Add the necessary support for the timer on the
S3C6400 and S3C6410 by adding <mach/tick.h>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

arch/arm/mach-s3c6400/include/mach/tick.h

+/* linux/arch/arm/mach-s3c6400/include/mach/tick.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *	http://armlinux.simtec.co.uk/
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C64XX - Timer tick support definitions
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef __ASM_ARCH_TICK_H
+#define __ASM_ARCH_TICK_H __FILE__
+
+/* note, the timer interrutps turn up in 2 places, the vic and then
+ * the timer block. We take the VIC as the base at the moment.
+ */
+static inline u32 s3c24xx_ostimer_pending(void)
+{
+	u32 pend = __raw_readl(S3C_VA_VIC0 + VIC_RAW_STATUS);
+	return pend & 1 << (IRQ_TIMER4_VIC - S3C64XX_IRQ_VIC0(0));
+}
+
+#endif /* __ASM_ARCH_6400_TICK_H */