powerpc/configs/64s: Enable CHECKPOINT_RESTORE

Most distros enable this.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230414132415.821564-13-mpe@ellerman.id.au

arch/powerpc/configs/ppc64_defconfig

@@ -32,6 +32,7 @@ CONFIG_CGROUP_PERF=y
 CONFIG_CGROUP_BPF=y
 CONFIG_CGROUP_MISC=y
 CONFIG_USER_NS=y
+CONFIG_CHECKPOINT_RESTORE=y
 CONFIG_SCHED_AUTOGROUP=y
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_PROFILING=y