Pull timer fixes from Thomas Gleixner:
"This contains:
- a build regression fix introduced by the timeconst move
- a hotplug regression fix introduced by the timer wheel diet
- a cpu hotplug bug fix for the exynos clocksource driver"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
time: Remove development rules from Kbuild/Makefile
timer: Fix hotplug regression
clocksource: exynos_mct: Avoid blocking calls in the cpu hotplug notifier