[GIT PULL] Mailbox changes for v5.15

[pr-tracker-bot at kernel.org]

The pull request you sent on Wed, 1 Sep 2021 09:50:55 -0500:

> git://git.linaro.org/landing-teams/working/fujitsu/integration.git tags/mailbox-v5.15

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/a180eab0b564a9dc149beb0517136ef7129f1260

Thank you!

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