Rollup merge of #135648 - folkertdev:naked-asm-wasm, r=bjorn3

support wasm inline assembly in `naked_asm!`

fixes rust-lang/rust#135518

Webassembly was overlooked previously, but now `naked_asm!` and `#[naked]` functions work on the webassembly targets.

Or, they almost do right now. I guess this is no surprise, but the `wasm32-unknown-unknown` target causes me some trouble. I'll add some inline comments with more details.

r? ```````@bjorn3```````

cc ```````@daxpedda,``````` ```````@tgross35```````

Author: matthiaskrgr