WORKAROUND: Temporary workaround for Suspend-To-Ram.

WORKAROUND: Temporary workaround for Suspend-To-Ram.

*** Should be purged later.

Current issue :
	@m0, When system wakes from suspend-to-ram state, it often
	hangs out or shows data abort error due to invalidate PC value
	(For more information, please reference 'BSP ISSUES'
	on TizenKernel Wiki (http://10.252.81.130/mediawiki/)

Suspect :
	Non boot CPUs' hotplugging. Without power-off of non-boot cpus,
	it never happens.

Workaround :
	Keep VDD_ARM regulator ON, even system's in STR state.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>