Auto merge of #114717 - loongarch-rs:rust-lld, r=b-naber

Switch to LLD as default linker for loongarch64-unknown-none*

The [LLD already supports LoongArch](rust-lang/llvm-project@6084ee7), it's time to switch to LLD as default linker for `loongarch64-unknown-none*`.

Author: bors

compiler/rustc_target/src/spec/loongarch64_unknown_none.rs

@@ -10,7 +10,8 @@ pub fn target() -> Target {
         options: TargetOptions {
             cpu: "generic".into(),
             features: "+f,+d".into(),
-            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::No),
+            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
+            linker: Some("rust-lld".into()),
             llvm_abiname: "lp64d".into(),
             max_atomic_width: Some(64),
             relocation_model: RelocModel::Static,

compiler/rustc_target/src/spec/loongarch64_unknown_none_softfloat.rs

@@ -11,7 +11,8 @@ pub fn target() -> Target {
             cpu: "generic".into(),
             features: "-f,-d".into(),
             abi: "softfloat".into(),
-            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::No),
+            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
+            linker: Some("rust-lld".into()),
             llvm_abiname: "lp64s".into(),
             max_atomic_width: Some(64),
             relocation_model: RelocModel::Static,