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Split sata_fsl_softreset() into hard and soft resets to make error-handling more efficient & device and PMP detection more reliable. Also includes fix for PMP support, driver tested with Sil3726, Sil4726 & Exar PMP controllers. [AV: Also fixes resuming from deep sleep on MPC8315 CPUs] Signed-off-by: Jiang Yutang <b14898@freescale.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>