ANDROID: sched: Add vendor hooks for override sugov behavior

Upstream moved the sugov to DEADLINE class which has higher prio than RT
so it can potentially block many RT use case in Android.

Also currently iowait doesn't distinguish background/foreground tasks
and we have seen cases where device run to high frequency unnecessarily
when running some background I/O.

Bug: 297343949
Signed-off-by: Wei Wang <wvw@google.com>
Change-Id: I21e9bfe9ef75a4178279574389e417c3f38e65ac