Promote powerpc64le-unknown-linux-musl to tier 2 with host tools

MCP: https://github.com/rust-lang/compiler-team/issues/803

Signed-off-by: Jens Reidel <adrian@travitia.xyz>

compiler/rustc_target/src/spec/targets/powerpc64le_unknown_linux_musl.rs

@@ -11,8 +11,8 @@ pub(crate) fn target() -> Target {
         llvm_target: "powerpc64le-unknown-linux-musl".into(),
         metadata: crate::spec::TargetMetadata {
             description: Some("64-bit PowerPC Linux with musl 1.2.3, Little Endian".into()),
-            tier: Some(3),
-            host_tools: Some(false),
+            tier: Some(2),
+            host_tools: Some(true),
             std: Some(true),
         },
         pointer_width: 64,