[compiler-rt] [scudo] Disable ring buffer in Trusty (PR #69280)

[Thurston Dang via llvm-commits]

thurstond wrote:

The commit message comes from https://r.android.com/2395872, but the actual change content is superseded by https://r.android.com/2480217 (i.e., the ring buffer isn't actually used), so the latter's commit message would be more useful.

https://github.com/llvm/llvm-project/pull/69280