sched/core_ctl: Refactor cpu data

Refactor cpu data into cpu data and cluster data to improve readability and
ease of understanding the code.

Change-Id: I96505aeb9d07a6fa3a2c28648ffa299e0cfa2e41
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
1 file changed