Implement tickless
Implement tickless verification
Change tickless verify range, from event create to event trigger
enable ktimer tickless by default
kernel: conditional build of tickless scheduling
Modify tickless verification display
Fix tickless does not recover heart beat
Fix call tickless_verify_stop before start
mk: migrate to Kconfig for tickless
conditional build of tickless scheduling status tracker
Move platform dependent codes from tickless_verify to hwtimer

Signed-off-by: Jim Huang <jserv@0xlab.org>
kernel: fix build failure because of tickless
Merge branch 'test-tickless'

Fixes #19