[PATCH] ARM: S5P: Add Support common arch_reset() for S5P SoCs

[Kukjin Kim]

This patch adds system define for arch_reset() for S5P SoCs
such as S5P6440, S5P6442, S5PC100 and S5PV210/S5PC110.
Now perform reset using Watchdog reset, SWRESET support with
s5p_reset_hook() will be added later.

NOTE: depends on 'Add Watchdog support for S5PC100'

ARM: S5P6442: Add Watchdog Timer map for S5P6442
ARM: S5P: Add System define for arch_reset()
ARM: S5P: Add Support common arch_reset() for S5P SoCs