dmidecode: upgraded package to upstream

Upgraded sys-apps/dmidecode to version 3.1 on amd64, arm, x86

Command used:
cros_portage_upgrade --board=soraka:x86-generic:veyron --upgrade dmidecode --unstable-ok

BUG=b:71779238
TEST=Ran following steps:
1. emerge-soraka dmidecode
2. "dmidecode -V" under /build/soraka returned 3.1

Change-Id: I3c326dbbe25df5214186295e005da75fe241c68d
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/881272
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Reviewed-by: Barnali Sarkar <barnali.sarkar@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
(cherry picked from commit d7a527690b1e33b0112f8c1b8f42ec0c35fbf239)
Reviewed-on: https://chromium-review.googlesource.com/884555
4 files changed