Merge tag 'asahi-soc-mailbox-6.8' of https://github.com/AsahiLinux/linux into soc/drivers

Apple SoC mailbox updates for 6.8

This moves the mailbox driver out of the mailbox subsystem and into SoC,
next to its only consumer (RTKit). It has been cooking in linux-next for
a long while, so it's time to pull it in.

* tag 'asahi-soc-mailbox-6.8' of https://github.com/AsahiLinux/linux:
  soc: apple: mailbox: Add explicit include of platform_device.h
  soc: apple: mailbox: Rename config symbol to APPLE_MAILBOX
  mailbox: apple: Delete driver
  soc: apple: rtkit: Port to the internal mailbox driver
  soc: apple: mailbox: Add ASC/M3 mailbox driver
  soc: apple: rtkit: Get rid of apple_rtkit_send_message_wait

Link: https://lore.kernel.org/r/6e64472e-c55d-4499-9a61-da59cfd28021@marcan.st


Signed-off-by: Arnd Bergmann <arnd@arndb.de>