powerpc/pseries: Enable kernel CPU dlpar from sysfs

Enable new kernel cpu hotplug functionality by allowing cpu dlpar requests
to be initiated from sysfs.

Signed-off-by: Nathan Fontenot <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>

arch/powerpc/platforms/pseries/dlpar.c

···
 	case PSERIES_HP_ELOG_RESOURCE_MEM:
 		rc = dlpar_memory(hp_elog);
 		break;
+	case PSERIES_HP_ELOG_RESOURCE_CPU:
+		rc = dlpar_cpu(hp_elog);
+		break;
 	default:
 		pr_warn_ratelimited("Invalid resource (%d) specified\n",
 				    hp_elog->resource);
···
 	if (!strncmp(arg, "memory", 6)) {
 		hp_elog->resource = PSERIES_HP_ELOG_RESOURCE_MEM;
 		arg += strlen("memory ");
+	} else if (!strncmp(arg, "cpu", 3)) {
+		hp_elog->resource = PSERIES_HP_ELOG_RESOURCE_CPU;
+		arg += strlen("cpu ");
 	} else {
 		pr_err("Invalid resource specified: \"%s\"\n", buf);
 		rc = -EINVAL;