Move the code around to differentiate different section of code and
prepare it to be factored out in the next patches.

The call order changed but hat doesn't have a side effect because
they are independent. The important call is cpu_do_idle() which must
be done the last.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: NViresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>