Add MODULE_INIT_COMPRESSED_FILE definition

[sinkingpoint]

This adds in the definition for MODULE_INIT_COMPRESSED_FILE so that we can use it in the init_module class of functions to load compressed modules

Fixes https://github.com/rust-lang/libc/issues/3781

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[tgross35]

It looks like there may be some platforms where this isn't available. Could you please take a look at the failures on the latest CI?

@rustbot author

[nathaniel-bennett]

It looks like MOD_INIT_COMPRESSED_FILE was added in Linux 5.17. My guess is that the arm test is failing because it's the first test that runs on a version of Linux older than that.

[tgross35]

@sinkingpoint could you rebase to get a fresh run of tests? This probably just needs something added in libc-test/build.rs to account for the kernel versions this is available on, as mentioned by @nathaniel-bennett

[tgross35]

I pushed your branch with a rebase just to get fresh CI. Seems like this will need to be disabled on at least a few platforms.

[bors]

:umbrella: The latest upstream changes (presumably #4132) made this pull request unmergeable. Please resolve the merge conflicts.

[tgross35]

@sinkingpoint gentle ping, are you able to update this?

[tgross35]

Closing as inactive, and I'm not quite sure anymore if this fits libc surface area