x32: disable turbofan for x32 port

tools/gyp/v8.gyp

Index: tools/gyp/v8.gyp
diff --git a/tools/gyp/v8.gyp b/tools/gyp/v8.gyp
index ab811957132374a48468c8db3f0019ede82af2e6..acee421bf11b3e0c7d6e5ef49b5700524a28612c 100644
--- a/tools/gyp/v8.gyp
+++ b/tools/gyp/v8.gyp
@@ -1145,10 +1145,6 @@
             '../../src/x64/macro-assembler-x64.h',
             '../../src/x64/regexp-macro-assembler-x64.cc',
             '../../src/x64/regexp-macro-assembler-x64.h',
-            '../../src/compiler/x64/code-generator-x64.cc',
-            '../../src/compiler/x64/instruction-codes-x64.h',
-            '../../src/compiler/x64/instruction-selector-x64.cc',
-            '../../src/compiler/x64/linkage-x64.cc',
             '../../src/ic/x64/access-compiler-x64.cc',
             '../../src/ic/x64/handler-compiler-x64.cc',
             '../../src/ic/x64/ic-x64.cc',
@@ -1156,6 +1152,14 @@
             '../../src/ic/x64/stub-cache-x64.cc',
           ],
         }],
+        ['v8_target_arch=="x64"', {
+          'sources': [
+            '../../src/compiler/x64/code-generator-x64.cc',
+            '../../src/compiler/x64/instruction-codes-x64.h',
+            '../../src/compiler/x64/instruction-selector-x64.cc',
+            '../../src/compiler/x64/linkage-x64.cc',
+          ],
+        }],
         ['OS=="linux"', {
             'link_settings': {
               'conditions': [