Pull mailbox updates from Jassi Brar:

 - qcom: enable sc8280xp, sm8550 and sm4250 support

 - ti: default to ARCH_K3 for msg manager

 - mediatek:
    - add mt8188 and mt8186 support
    - request irq only after got ready

 - zynq-ipi: fix error handling after device_register

 - mpfs: check sys-con status

 - rockchip: simplify by using device_get_match_data

* tag 'mailbox-v6.2' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  dt-bindings: mailbox: qcom-ipcc: Add compatible for SM8550
  mailbox: mtk-cmdq: Do not request irq until we are ready
  mailbox: zynq-ipi: fix error handling while device_register() fails
  mailbox: mtk-cmdq-mailbox: Use platform data directly instead of copying
  mailbox: arm_mhuv2: Fix return value check in mhuv2_probe()
  dt-bindings: mailbox: mediatek,gce-mailbox: add mt8188 compatible name
  dt-bindings: mailbox: add GCE header file for mt8188
  mailbox: mpfs: read the system controller's status
  mailbox: mtk-cmdq: add MT8186 support
  mailbox: mtk-cmdq: add gce ddr enable support flow
  mailbox: mtk-cmdq: add gce software ddr enable private data
  mailbox: mtk-cmdq: Use GCE_CTRL_BY_SW definition instead of number
  mailbox: rockchip: Use device_get_match_data() to simplify the code
  dt-bindings: mailbox: qcom-ipcc: Add sc8280xp compatible
  mailbox: config: ti-msgmgr: Default set to ARCH_K3 for TI msg manager
  mailbox: qcom-apcs-ipc: Add SM4250 APCS IPC support
  dt-bindings: mailbox: qcom: Add SM4250 APCS compatible