ARC: smp: Rename platform hook @init_smp -> @init_cpu_smp

This conveys better that it is called for each cpu

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/smp.c

@@ -131,8 +131,8 @@ void start_kernel_secondary(void)
 
 	pr_info("## CPU%u LIVE ##: Executing Code...\n", cpu);
 
-	if (machine_desc->init_smp)
-		machine_desc->init_smp(cpu);
+	if (machine_desc->init_cpu_smp)
+		machine_desc->init_cpu_smp(cpu);
 
 	arc_local_timer_setup();