powerpc/pseries: Enable relay in pseries_defconfig

Enable relay in pseries config, ppc64_defconfig had it enabled but pseries
did not.
Signed-off-by: NAnton Blanchard <anton@samba.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/configs/pseries_defconfig

@@ -95,7 +95,7 @@ CONFIG_CGROUP_CPUACCT=y
 CONFIG_SYSFS_DEPRECATED=y
 CONFIG_SYSFS_DEPRECATED_V2=y
 CONFIG_PROC_PID_CPUSET=y
-# CONFIG_RELAY is not set
+CONFIG_RELAY=y
 CONFIG_NAMESPACES=y
 # CONFIG_UTS_NS is not set
 # CONFIG_IPC_NS is not set