mipsel: build: Fix -z execstack link error

src/build/config/compiler/BUILD.gn

@@ -1105,10 +1105,18 @@ config("linker") {
   }
 
   if (is_linux || is_chromeos || is_android || is_fuchsia) {
-    ldflags += [
-      "-Wl,-z,noexecstack",
-      "-Wl,-z,relro",
-    ]
+    if (current_cpu != "mipsel" && current_cpu != "mips64el") {
+      ldflags += [
+        "-Wl,-z,noexecstack",
+        "-Wl,-z,relro",
+      ]
+    } else {
+      ldflags += [
+        # https://github.com/llvm/llvm-project/pull/124068
+        "-Wl,-z,execstack",
+        "-Wl,-z,relro",
+      ]
+    }
 
     if (!is_component_build) {
       ldflags += [ "-Wl,-z,now" ]