Merge branch 'for-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata

Pull libata fixes from Tejun Heo:
 "Nothing too interesting. David Milburn improved a corner case
  misbehavior during hotplug. Other than that, minor driver-specific
  fixes"

* 'for-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: sata_down_spd_limit should return if driver has not recorded sstatus speed
  ahci: mtk: Change driver name to ahci-mtk
  ahci: qoriq: refine port register configuration
  pata_pdc2027x : make pdc2027x_*_timing structures const
  pata_pdc2027x: Remove unnecessary error check
  ata: mediatek: Fix typo in module description