ARC: [clockevent] can't be SoC specific

So no point keeping it weak
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/time.c

@@ -222,9 +222,8 @@ static struct irqaction arc_timer_irq = {
 
 /*
  * Setup the local event timer for @cpu
- * N.B. weak so that some exotic ARC SoCs can completely override it
  */
-void __weak arc_local_timer_setup(unsigned int cpu)
+void arc_local_timer_setup(unsigned int cpu)
 {
 	struct clock_event_device *clk = &per_cpu(arc_clockevent_device, cpu);