Fix mips64el typo in snapshot_toolchain.gni.

snapshot_toolchain.gni

 # Copyright 2015 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 25 matching lines @@
 # TODO(GYP): For now we only support 32-bit little-endian target builds from an
 # x64 Linux host. Eventually we need to support all of the host/target
 # configurations v8 runs on.
 if (v8_snapshot_toolchain == "") {
   if (host_cpu == "x64" && host_os == "linux") {
     if (current_cpu == "arm" || current_cpu == "mipsel" ||
         current_cpu == "x86") {
       _snapshot_cpu = "x86"
     } else {
       assert(current_cpu == "arm64" || current_cpu == "x64" ||
-                 current_cpu == "mipsel64",
+                 current_cpu == "mips64el",
              "Need environment for this arch: $current_cpu")
       _snapshot_cpu = "x64"
     }
 
     if (v8_current_cpu != _snapshot_cpu) {
       _cpus = "${_snapshot_cpu}_v8_${v8_current_cpu}"
     } else {
       _cpus = _snapshot_cpu
     }
 
     if ((host_os == "linux" && current_os == "android") || is_clang) {
       v8_snapshot_toolchain = "//build/toolchain/linux:clang_${_cpus}"
     } else {
       v8_snapshot_toolchain = "//build/toolchain/linux:${_cpus}"
     }
   } else if (host_os == "mac" && current_os == "win") {
     assert(v8_current_cpu == current_cpu,
            "v8 target must match the regular target on this platform")
     v8_snapshot_toolchain = "//build/toolchain/mac:clang_$current_cpu"
   } else {
     v8_snapshot_toolchain = default_toolchain
   }
 }