[ia32] Add additional include guard for valgrind

R=victorgomes@chromium.org

Change-Id: I2f6ba1d0b127567859c57dd42b73d7e4e0a8d29e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2912728Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74730}

src/codegen/ia32/cpu-ia32.cc

@@ -4,7 +4,7 @@
 
 // CPU specific code for ia32 independent of OS goes here.
 
-#ifdef __GNUC__
+#if defined(__GNUC__) && !defined(GOOGLE3)
 #include "src/third_party/valgrind/valgrind.h"
 #endif