Don't remove -m32 when building ia32 targets.

src/trusted/service_runtime/linux/nacl_bootstrap.gyp

Index: src/trusted/service_runtime/linux/nacl_bootstrap.gyp
===================================================================
--- src/trusted/service_runtime/linux/nacl_bootstrap.gyp	(revision 13364)
+++ src/trusted/service_runtime/linux/nacl_bootstrap.gyp	(working copy)
@@ -43,22 +43,6 @@
       'libraries': [
         '-lelf',
       ],
-      # This is an ugly kludge because gyp doesn't actually treat
-      # host_arch=x64 target_arch=ia32 as proper cross compilation.
-      # It still wants to compile the "host" program with -m32 et
-      # al.  Though a program built that way can indeed run on the
-      # x86-64 host, we cannot reliably build this program on such a
-      # host because Ubuntu does not provide the full suite of
-      # x86-32 libraries in packages that can be installed on an
-      # x86-64 host; in particular, libelf is missing.  So here we
-      # use the hack of eliding all the -m* flags from the
-      # compilation lines, getting the command close to what they
-      # would be if gyp were to really build properly for the host.
-      # TODO(bradnelson): Clean up with proper cross support.
-      'cflags/': [['exclude', '^-m.*'],
-                  ['exclude', '^--sysroot=.*']],
-      'ldflags/': [['exclude', '^-m.*'],
-                   ['exclude', '^--sysroot=.*']],
       'cflags!': [
         # MemorySanitizer reports an error in this binary unless instrumented
         # libelf is supplied. Because libelf source code uses gcc extensions,