Merge tag 'mailbox-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind...

Mailbox related changes for omaps to get it to work with
device tree.

* tag 'mailbox-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  mailbox/omap: add support for parsing dt devices
  Documentation: dt: add omap mailbox bindings

Signed-off-by: Olof Johansson <[email protected]>