config: CONFIG_ARM_ERRATA_798181 breaks omap3

reported https://github.com/RobertCNelson/stable-kernel/commit/de5860f58246352e9a726ab03369a723e68315f7

Signed-off-by: Torstein Hegge <hegge@resisty.net>
Signed-off-by: Robert Nelson <robertcnelson@gmail.com>