sched: sync shed_ext code with upstream
JIRA: https://issues.redhat.com/browse/RHEL-111810
Update the sched_ext code with upstream. This is up to
circa v6.16. The sched_ext code is fairly contained.
It changes quickly still so I want to have the latest
code which will benefit people experimenting with it.
Signed-off-by: Phil Auld pauld@redhat.com