add fwupdate-serio user and group use by the ELAN TrackPoint firmware updater

BUG=b:162454660
TEST=none

Change-Id: Ifdaa6a204fa5e20d1c634ddee6293e76cd01f56d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/2391895
Reviewed-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-by: Allen Webb <allenwebb@google.com>
Tested-by: jingle wu <jingle.wu@elan.corp-partner.google.com>
Commit-Queue: Raul E Rangel <rrangel@chromium.org>
diff --git a/profiles/base/accounts/group/fwupdate-serio b/profiles/base/accounts/group/fwupdate-serio
new file mode 100644
index 0000000..2d86d81
--- /dev/null
+++ b/profiles/base/accounts/group/fwupdate-serio
@@ -0,0 +1,3 @@
+group:fwupdate-serio
+gid:20163
+users:fwupdate-serio
diff --git a/profiles/base/accounts/group/serio b/profiles/base/accounts/group/serio
new file mode 100644
index 0000000..70d8b43
--- /dev/null
+++ b/profiles/base/accounts/group/serio
@@ -0,0 +1,4 @@
+group:serio
+gid:421
+# fwupdate-serio: For firmware updater utilities that use serio-raw interface.
+users:fwupdate-serio
diff --git a/profiles/base/accounts/user/fwupdate-serio b/profiles/base/accounts/user/fwupdate-serio
new file mode 100644
index 0000000..3666823
--- /dev/null
+++ b/profiles/base/accounts/user/fwupdate-serio
@@ -0,0 +1,6 @@
+user:fwupdate-serio
+uid:20163
+gid:20163
+gecos:user for firmware update utilities that use serio-raw devices
+home:/dev/null
+shell:/bin/false