Revert "arm: make return_address available for ARM_UNWIND"

This reverts commit e89636e4f04e04b545c2fe19214d23c6aac45638.
Revert "Revert "arm: make return_address available for ARM_UNWIND""

This reverts commit 87cc6272e6385f6bae19ea00bfe5200b9d03395a.
OMAP: CPU: Fix suspend rule in thermal throttle