ARM: remove struct sys_timer suspend and resume fields

These fields duplicate e.g. struct clock_event_device's suspend and
resume fields, so remove them now that nothing is using them. The aim
is to remove all fields from struct sys_timer except .init, then replace
the ARM machine descriptor's .timer field with a .init_time function
instead, and delete struct sys_timer.

Reviewed-by: Linus Walleij <[e-mail]>
Signed-off-by: Stephen Warren <[e-mail]>

arch/arm/include/asm/mach/time.h

···
  *   Initialise the kernels jiffy timer source, claim interrupt
  *   using setup_irq.  This is called early on during initialisation
  *   while interrupts are still disabled on the local CPU.
- * - suspend
- *   Suspend the kernel jiffy timer source, if necessary.  This
- *   is called with interrupts disabled, after all normal devices
- *   have been suspended.  If no action is required, set this to
- *   NULL.
- * - resume
- *   Resume the kernel jiffy timer source, if necessary.  This
- *   is called with interrupts disabled before any normal devices
- *   are resumed.  If no action is required, set this to NULL.
  * - offset
  *   Return the timer offset in microseconds since the last timer
  *   interrupt.  Note: this must take account of any unprocessed
···
  */
 struct sys_timer {
 	void			(*init)(void);
-	void			(*suspend)(void);
-	void			(*resume)(void);
 };
 
 extern void timer_tick(void);

arch/arm/kernel/time.c

···
 #include <linux/timex.h>
 #include <linux/errno.h>
 #include <linux/profile.h>
-#include <linux/syscore_ops.h>
 #include <linux/timer.h>
 #include <linux/irq.h>
 
···
 
 	return -EINVAL;
 }
-
-#if defined(CONFIG_PM) && !defined(CONFIG_GENERIC_CLOCKEVENTS)
-static int timer_suspend(void)
-{
-	if (system_timer->suspend)
-		system_timer->suspend();
-
-	return 0;
-}
-
-static void timer_resume(void)
-{
-	if (system_timer->resume)
-		system_timer->resume();
-}
-#else
-#define timer_suspend NULL
-#define timer_resume NULL
-#endif
-
-static struct syscore_ops timer_syscore_ops = {
-	.suspend	= timer_suspend,
-	.resume		= timer_resume,
-};
-
-static int __init timer_init_syscore_ops(void)
-{
-	register_syscore_ops(&timer_syscore_ops);
-
-	return 0;
-}
-
-device_initcall(timer_init_syscore_ops);
 
 void __init time_init(void)
 {