BACKPORT: FROMGIT: sched: Introduce affinity_context

In order to prepare for passing through additional data through the
affinity call-chains, convert the mask and flags argument into a
structure.

Change-Id: Ib6332dfb83895be127cf304800e7a65c4bc78c99
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220922180041.1768141-5-longman@redhat.com
BUG: 254447891
(cherry picked from commit 7ecbcde6e527c3828adee88b1e7edeb01e7895fb
 https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git

 sched/core)
[ashayj: Resolved minor conflict in kernel/sched/core.c]
Signed-off-by: Ashay Jaiswal <quic_ashayj@quicinc.com>