[ARM SMP] Add missing SMP timer handling for realview

Until we have local timer support, we need to broadcast the
timer interrupt to the other CPUs.  Also, add the missing
smp_send_timer() prototype to asm/smp.h

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-realview/core.c

@@ -550,6 +550,11 @@ static irqreturn_t realview_timer_interrupt(int irq, void *dev_id, struct pt_reg
 
 	timer_tick(regs);
 
+#ifdef CONFIG_SMP
+	smp_send_timer();
+	update_process_times(user_mode(regs));
+#endif
+
 	write_sequnlock(&xtime_lock);
 
 	return IRQ_HANDLED;

include/asm-arm/smp.h

@@ -46,6 +46,11 @@ extern void smp_store_cpu_info(unsigned int cpuid);
  */
 extern void smp_cross_call(cpumask_t callmap);
 
+/*
+ * Broadcast a timer interrupt to the other CPUs.
+ */
+extern void smp_send_timer(void);
+
 /*
  * Boot a secondary CPU, and assign it the specified idle task.
  * This also gives us the initial stack to use for this CPU.