ANDROID: sched: Add vendor hooks for skipping sugov update

This is to add capability for vendor to decide whether a cpufreq update
is needed, e.g. up/down rate limit.

Using restricted hook since it can be called from scheduler wakeup path.

Bug: 170511085
Signed-off-by: Wei Wang <wvw@google.com>
Change-Id: If9adea3a3e31efbf3858fbd009665a07dc70c638
(cherry picked from commit f9f34645)
Signed-off-by: Will McVicker <willmcvicker@google.com>