tcmalloc: reland fix for mipsel compile errors

Original CL:
  https://chromium-review.googlesource.com/909216
  [MIPS][tcmalloc] Fix mipsel compile errors

  tcmalloc is using very old version of linux_syscall_support.h

  The following mipsel related changes are pulled from lss project:

  https://chromiumcodereview.appspot.com/10067027
  https://codereview.chromium.org/13846002
  https://codereview.chromium.org/913723002/
  https://codereview.chromium.org/836473006

  Bug: 810356, 794147

BUG=724399,b:119055259

Change-Id: I9609460412d27ab8ed963577af6c284d8cb898d4
Reviewed-on: https://chromium-review.googlesource.com/c/1475153
Reviewed-by: Will Harris <wfh@chromium.org>
Commit-Queue: Gabriel Marin <gmx@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#633803}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: de5fb4ed57d6e691512a4d1d7b7fbbfaf8917538
1 file changed
tree: 7b290b658181e74bad9172452591b8cdf212baf7
  1. src/