arm: Kconfig: Add SCHED_HRTICK

The arm platform has opted to ignore the mainline Kconfig.hz
and add their own definition here instead.

Add this missing config item.

Change-Id: I034978b79c05ce7a237b8f50217ceb2fe076ffc2
i9500: configs: Update after enabling HRTICK
ARM: EXYNOS: Enforce full regulator constraints

Change-Id: If24e3b2567a3209a647212467e40562873e1975f