fix: "smp_call_function: get rid of the unused nonatomic/retry argument"

fix:

kernel/smp.c: In function 'smp_call_function_mask':
kernel/smp.c:303: error: too many arguments to function 'smp_call_function_single'

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/smp.c b/kernel/smp.c
index 7e0432a..4f582b2 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -300,7 +300,7 @@
 		return 0;
 	else if (num_cpus == 1) {
 		cpu = first_cpu(mask);
-		return smp_call_function_single(cpu, func, info, 0, wait);
+		return smp_call_function_single(cpu, func, info, wait);
 	}
 
 	if (!wait) {