feat(intel): implement timer init divider via CPU frequency for N5X

Get CPU frequency and update the timer init div with it.
The timer is vary based on the CPU frequency instead of hardcoded.

Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
Signed-off-by: Sieu Mun Tang <sieu.mun.tang@intel.com>
Change-Id: Ibfaa47fb7a25176eebf06f4828bf9729d56f12ed
9 files changed