Fix esp8266 linker

Author: MabezDev

src/bootstrap/config.rs

@@ -544,7 +544,7 @@ impl Config {
             set(&mut config.llvm_static_stdcpp, llvm.static_libstdcpp);
             set(&mut config.llvm_link_shared, llvm.link_shared);
             config.llvm_targets = llvm.targets.clone();
-            config.llvm_experimental_targets = Some(llvm.experimental_targets.clone().unwrap_or("Xtensa".to_string()));
+            config.llvm_experimental_targets = llvm.experimental_targets.clone();
             config.llvm_link_jobs = llvm.link_jobs;
             config.llvm_version_suffix = llvm.version_suffix.clone();
             config.llvm_clang_cl = llvm.clang_cl.clone();

src/librustc_target/spec/xtensa_esp8266_none_elf.rs

@@ -15,7 +15,7 @@ pub fn target() -> TargetResult {
 
         options: TargetOptions {
             cpu: "esp8266".to_string(),
-            linker: Some("xtensa-esp32-elf-ld".to_string()),
+            linker: Some("xtensa-lx106-elf-gcc".to_string()),
 
             max_atomic_width: Some(32),