-- change 'tsc_khz' to static -- move these APIs from rtl.h to timer.c us_to_ticks() ticks_to_us() ticks_to_ms() rdtsc() Tracked-On: #1842 Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>