fix(intel): revert sys counter to 400MHz

For Simics and official release, revert back to 400MHz instead of
80MHz. Sys counter shall get from a static clock.

Change-Id: I9ee3586bc411af8d7381c8bd6404b8449b0c3f69
Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
1 file changed