Add pixfwupdate user/group for pix_tpfwup update touchpad firmware

BUG=none
TEST=Pixart touchpad firmware update

Change-Id: I78c733be1d788d30e27afb0bf6c17dce58ec2426
Reviewed-on: https://chromium-review.googlesource.com/1198813
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Hao He <hao.he@bitland.corp-partner.google.com>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-by: Hao He <hao.he@bitland.corp-partner.google.com>
(cherry picked from commit 0002a2a687f133ca31cb1ba99ee5465fca9f62bc)
Reviewed-on: https://chromium-review.googlesource.com/c/1484929
Reviewed-by: Allan Almiranez <allanalmiranez@chromium.org>
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
Commit-Queue: Andrew de los Reyes <adlr@chromium.org>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Trybot-Ready: Andrew de los Reyes <adlr@chromium.org>
2 files changed
tree: 8a3300003bf95c34c28d979cdad201d4a76a3de0
  1. PRESUBMIT.cfg
  2. eclass/
  3. metadata/
  4. profiles/