Merge tag 'arc-4.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Merge tag 'arc-4.7-rc3' of git://git./linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:

 - Revert of ll-sc backoff retry workaround in atomics/spinlocks as
   hardware is now proven to work just fine

 - Typo fixes (Thanks Andrea Gelmini)

 - Removal of obsolete DT property (Alexey)

 - Other minor fixes

* tag 'arc-4.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  Revert "ARCv2: spinlock/rwlock/atomics: Delayed retry of failed SCOND with exponential backoff"
  Revert "ARCv2: spinlock/rwlock: Reset retry delay when starting a new spin-wait cycle"
  Revert "ARCv2: spinlock/rwlock/atomics: reduce 1 instruction in exponential backoff"
  ARC: don't enable DISCONTIGMEM unconditionally
  ARC: [intc-compact] simplify code for 2 priority levels
  arc: Get rid of root core-frequency property
  Fix typos