Fix MIPS64 compilation issue with GN build system

BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
 if (is_android) {
@@ skipping 1716 matching lines @@
       "src/mips/interface-descriptors-mips.cc",
       "src/mips/macro-assembler-mips.cc",
       "src/mips/macro-assembler-mips.h",
       "src/mips/simulator-mips.cc",
       "src/mips/simulator-mips.h",
       "src/regexp/mips/regexp-macro-assembler-mips.cc",
       "src/regexp/mips/regexp-macro-assembler-mips.h",
     ]
   } else if (v8_target_arch == "mips64el") {
     sources += [
-      "compiler/mips64/code-generator-mips64.cc",
-      "compiler/mips64/instruction-codes-mips64.h",
-      "compiler/mips64/instruction-scheduler-mips64.cc",
-      "compiler/mips64/instruction-selector-mips64.cc",
+      "src/compiler/mips64/code-generator-mips64.cc",
+      "src/compiler/mips64/instruction-codes-mips64.h",
+      "src/compiler/mips64/instruction-scheduler-mips64.cc",
+      "src/compiler/mips64/instruction-selector-mips64.cc",
       "src/crankshaft/mips64/lithium-codegen-mips64.cc",
       "src/crankshaft/mips64/lithium-codegen-mips64.h",
       "src/crankshaft/mips64/lithium-gap-resolver-mips64.cc",
       "src/crankshaft/mips64/lithium-gap-resolver-mips64.h",
       "src/crankshaft/mips64/lithium-mips64.cc",
       "src/crankshaft/mips64/lithium-mips64.h",
       "src/debug/mips64/debug-mips64.cc",
       "src/full-codegen/mips64/full-codegen-mips64.cc",
       "src/ic/mips64/access-compiler-mips64.cc",
       "src/ic/mips64/handler-compiler-mips64.cc",
@@ skipping 436 matching lines @@
   sources = [
     "test/fuzzer/wasm-asmjs.cc",
   ]
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }