Revert "[moto] arch/arm/mach-omap2/omap4-sar: changes for sar restore"
This reverts commit ff20cec.

The reverted commit is an attempted workaround from motorola to fix OMAP
errata i719 which caused suspend/resume-problems leading at least to
increased battery usage.

The upstream-workaround for this errata from omapzoom is already applied
to this tree, so revert motorola's attempt.

Change-Id: Ib3cd688f2b49f9d3536b5c05edd3bb1b1bfbccbd