[llvm] [ARM] Specify inlining behavior in TableGen (PR #205763)

[Nikita Popov via llvm-commits]

nikic wrote:

My original plan here was to keep this change NFC and do followup adjustments separately. But based on the review I've included this directly in this PR now. I've pushed one commit to do some adjustments and then another to drop the remaining InlineDefault.

https://github.com/llvm/llvm-project/pull/205763