[ARM] Fix Integrator timer implementation.

arch/arm/mach-integrator/core.c

@@ -171,7 +171,7 @@ static unsigned long timer_reload;
  * Returns number of ms since last clock interrupt.  Note that interrupts
  * will have been disabled by do_gettimeoffset()
  */
-static unsigned long integrator_gettimeoffset(void)
+unsigned long integrator_gettimeoffset(void)
 {
 	volatile TimerStruct_t *timer1 = (TimerStruct_t *)TIMER1_VA_BASE;
 	unsigned long ticks1, ticks2, status;

arch/arm/mach-integrator/integrator_ap.c

@@ -40,6 +40,7 @@
 #include <asm/mach/flash.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/map.h>
+#include <asm/mach/time.h>
 
 #include "common.h"
 

arch/arm/mach-integrator/integrator_cp.c

@@ -35,6 +35,7 @@
 #include <asm/mach/irq.h>
 #include <asm/mach/mmc.h>
 #include <asm/mach/map.h>
+#include <asm/mach/time.h>
 
 #include "common.h"
 #include "clock.h"