Rollup of 4 pull requests#113763

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matthiaskrgr wants to merge 9 commits intorust-lang:masterfrom

matthiaskrgr:rollup-54luakf

Commits on Jun 26, 2023

Add target documentation for MIPS Release 6 targets
Cyanoxygen
committed

Commits on Jul 12, 2023

platform-support.md: It's now verified that NetBSD/riscv64 can self-host.
he32
committed

Commits on Jul 14, 2023