Rollup merge of #138426 - madsmtm:vita-llvm-target, r=jieyouxu

Fix `armv7-sony-vita-newlibeabihf` LLVM target triple

It was previously normalized by LLVM to `thumbv7a-vita-unknown-eabihf` (can be seen with `clang -target thumbv7a-vita-eabihf -v`), which seems wrong, as Vita is the OS name.

Motivation: To make it easier to verify that [`cc-rs`' conversion from `rustc` to Clang/LLVM triples](rust-lang/cc-rs#1431) is correct.

CC target maintainers `@nikarh,` `@pheki` and `@ZetaNumbers.`
r? jieyouxu

Author: matthiaskrgr

compiler/rustc_target/src/spec/targets/armv7_sony_vita_newlibeabihf.rs

@@ -15,7 +15,7 @@ pub(crate) fn target() -> Target {
     );
 
     Target {
-        llvm_target: "thumbv7a-vita-eabihf".into(),
+        llvm_target: "thumbv7a-sony-vita-eabihf".into(),
         metadata: TargetMetadata {
             description: Some(
                 "Armv7-A Cortex-A9 Sony PlayStation Vita (requires VITASDK toolchain)".into(),