Pull mailbox updates from Jassi Brar:

 - redo the omap driver from legacy to mailbox api

 - enable bufferless IPI for zynqmp

 - add mhu-v3 driver

 - convert from tasklet to BH workqueue

 - add qcom MSM8974 APCS compatible IDs

* tag 'mailbox-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: (24 commits)
  dt-bindings: mailbox: qcom-ipcc: Document the SDX75 IPCC
  dt-bindings: mailbox: qcom: Add MSM8974 APCS compatible
  mailbox: Convert from tasklet to BH workqueue
  mailbox: mtk-cmdq: Fix pm_runtime_get_sync() warning in mbox shutdown
  mailbox: mtk-cmdq-mailbox: fix module autoloading
  mailbox: zynqmp: handle SGI for shared IPI
  mailbox: arm_mhuv3: Add driver
  dt-bindings: mailbox: arm,mhuv3: Add bindings
  mailbox: omap: Remove kernel FIFO message queuing
  mailbox: omap: Reverse FIFO busy check logic
  mailbox: omap: Remove mbox_chan_to_omap_mbox()
  mailbox: omap: Use mbox_controller channel list directly
  mailbox: omap: Use function local struct mbox_controller
  mailbox: omap: Merge mailbox child node setup loops
  mailbox: omap: Use devm_pm_runtime_enable() helper
  mailbox: omap: Remove device class
  mailbox: omap: Remove unneeded header omap-mailbox.h
  mailbox: omap: Move fifo size check to point of use
  mailbox: omap: Move omap_mbox_irq_t into driver
  mailbox: omap: Remove unused omap_mbox_request_channel() function
  ...