Merge tag 'mailbox-v5.12' of git://git.linaro.org/landing-teams/working/fujitsu/integ...

Pull mailbox updates from Jassi Brar:

 - sprd: fix a macro value

 - omap: support for K3 AM64x

 - tegra: fix lockdep warnings

 - qcom: support for SDX55 and SC8180X

 - arm: fixes for sparse, kfree and void return

* tag 'mailbox-v5.12' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer
  mailbox: tegra-hsp: Set lockdep class dynamically
  mailbox: sprd: correct definition of SPRD_OUTBOX_FIFO_FULL
  mailbox: arm_mhuv2: make remove callback return void
  mailbox: arm_mhuv2: Fix sparse warnings
  mailbox: qcom: Add support for SDX55 APCS IPC
  dt-bindings: mailbox: Add binding for SDX55 APCS
  mailbox: omap: Add support for K3 AM64x SoCs
  dt-bindings: mailbox: omap: Update binding for AM64x SoCs
  mailbox: qcom: Add SC8180X apcs compatible
  dt-bindings: mailbox: qcom: Add SC8180X APCS compatible