ARM: OMAP: Update timer32k.c to compile

This patch updates 32KiHZ timer code to compile.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/timer32k.c

@@ -42,6 +42,7 @@
 #include <linux/spinlock.h>
 #include <linux/err.h>
 #include <linux/clk.h>
+#include <linux/clocksource.h>
 
 #include <asm/system.h>
 #include <asm/hardware.h>
@@ -170,15 +171,6 @@ omap_32k_ticks_to_nsecs(unsigned long ticks_32k)
 
 static unsigned long omap_32k_last_tick = 0;
 
-/*
- * Returns elapsed usecs since last 32k timer interrupt
- */
-static unsigned long omap_32k_timer_gettimeoffset(void)
-{
-	unsigned long now = omap_32k_sync_timer_read();
-	return omap_32k_ticks_to_usecs(now - omap_32k_last_tick);
-}
-
 /*
  * Returns current time from boot in nsecs. It's OK for this to wrap
  * around for now, as it's just a relative time stamp.
@@ -302,7 +294,6 @@ static __init void omap_init_32k_timer(void)
 
 	if (cpu_class_is_omap1())
 		setup_irq(INT_OS_TIMER, &omap_32k_timer_irq);
-	omap_timer.offset  = omap_32k_timer_gettimeoffset;
 	omap_32k_last_tick = omap_32k_sync_timer_read();
 
 #ifdef CONFIG_ARCH_OMAP2
@@ -337,5 +328,4 @@ static void __init omap_timer_init(void)
 
 struct sys_timer omap_timer = {
 	.init		= omap_timer_init,
-	.offset		= NULL,		/* Initialized later */
 };