linux/sched_migrate_cpu: update comment
linux/sched_migrate_cpu: update comment

In Musl git, sched_getcpu is now implemented:
http://git.musl-libc.org/cgit/musl/commit/?id=98d335735d64ee34a34cb9c08ea2cb51a076d2a1

... and it supports vDSO:
http://git.musl-libc.org/cgit/musl/commit/?id=db66ef1f7db7c5b672591a97a97bc789c9efe2f3

fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared