fix backup includes for PTRACE_GET_THREAD_AREA on arm/arm64

<asm/ptrace-abi.h> doesn't exist in the arm sysroots, and <sys/ptrace.h>
defines PTRACE_GET_THREAD_AREA as an enum, not a #define:

  /* Get the thread pointer of a process.  */
  PTRACE_GET_THREAD_AREA = 22,

On aarch64, neither PT_GET_THREAD_AREA nor PTRACE_GET_THREAD_AREA are defined.

This changes the include trigger to check for !arm && !aarch64 as well as
defined(PTRACE_GET_THREAD_AREA) to catch the arm and aarch64 cases.

Change-Id: I9044d9f315cbb15011f397a06d03d4bec7396985
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1496448Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Adenilson Cavalcanti <cavalcantii@chromium.org>
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#637905}

sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc

@@ -34,12 +34,14 @@
 #if !defined(OS_NACL_NONSFI)
 #include <sys/ioctl.h>
 #include <sys/ptrace.h>
-#if !defined(PTRACE_GET_THREAD_AREA) && defined(OS_LINUX) && \
-    !defined(OS_CHROMEOS)
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS) && !defined(__arm__) && \
+    !defined(__aarch64__) && !defined(PTRACE_GET_THREAD_AREA)
 // Also include asm/ptrace-abi.h since ptrace.h in older libc (for instance
 // the one in Ubuntu 16.04 LTS) is missing PTRACE_GET_THREAD_AREA.
+// asm/ptrace-abi.h doesn't exist on arm32 and PTRACE_GET_THREAD_AREA isn't
+// defined on aarch64, so don't try to include this on those platforms.
 #include <asm/ptrace-abi.h>
-#endif  // !PTRACE_GET_THREAD_AREA && OS_LINUX && !OS_CHROMEOS
+#endif
 #endif  // !OS_NACL_NONSFI
 
 #if defined(OS_ANDROID)