Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu...

Pull mailbox updates from Jassi Brar:

 - a TI specific quirk to get CPU control working via remote master.

 - a new mailbox driver for an ST platform.

 - a generic test driver to aid new driver development.  And a couple of
   fixes to make that really clean.

* 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  mailbox: mailbox-test: avoid reading iomem twice
  mailbox: Off by one in mbox_test_message_read()
  mailbox/omap: Add ti,mbox-send-noirq quirk to fix AM33xx CPU Idle
  mailbox: mailbox-test: Correctly repair Sparse warnings
  mailbox: Fix a couple of trivial static checker issues
  mailbox: Add generic mechanism for testing Mailbox Controllers
  mailbox: Add support for ST's Mailbox IP
  mailbox: dt: Supply bindings for ST's Mailbox IP
  PCC: fix dereference of ERR_PTR