Revert "Restore Normal HZ value. 200 is too low."

This reverts commit 333ee6c025ba0481404292075e476e060d38e7aa.

Conflicts:
	arch/arm/Kconfig

+ use default value for HZ ...

"200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || ARCH_S5PV210 || ARCH_EXYNOS4" -> http://lists.infradead.org/pipermail/linux-arm-kernel/2011-February/041940.html