MIPS: XLR, XLS: Add comment for smp setup

It seems that BSP could be setup twice, but the nlm_cpu_ready array is only
set for ASPs in smpboot.S, not including BSP.

Signed-off-by: Hillf Danton <[e-mail]>
Cc: "Jayachandran C." <[e-mail]>
Cc: LKML <[e-mail]>
Cc: [e-mail]
Patchwork: https://patchwork.linux-mips.org/patch/2695/
Signed-off-by: Ralf Baechle <[e-mail]>,

arch/mips/netlogic/xlr/smp.c

···
 
 	num_cpus = 1;
 	for (i = 0; i < NR_CPUS; i++) {
+		/*
+		 * BSP is not set in nlm_cpu_ready array, it is only for
+		 * ASPs (goto see smpboot.S)
+		 */
 		if (nlm_cpu_ready[i]) {
 			cpu_set(i, phys_cpu_present_map);
 			__cpu_number_map[i] = num_cpus;