chromeos-config: Rename whitelabel-tag in cros_config_mock

The only caller of this script is the factory code, which at the
moment does not use the --whitelabel-tag flag.  Thus, we can safely
rename the flag without needing any aliases.

BUG=b:169766857,b:244677198
TEST=on bobba, "cros_config_mock --custom-label-tag gik / name"
     outputs "gik"

Change-Id: If01e4c96ec13e0ef07aaebd5b3128d8b56015196
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/3543316
Reviewed-by: Stimim Chen <stimim@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
Tested-by: Jack Rosenthal <jrosenth@chromium.org>
(cherry picked from commit 4709d3c9ee8c0eac7feea4a643c69dbfc4369947)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/3874275
Commit-Queue: Kenny Pan <kennypan@google.com>
Tested-by: Ken Lu <ken_lu@pegatron.corp-partner.google.com>
Reviewed-by: Chen-Tsung Hsieh <chentsung@chromium.org>
diff --git a/chromeos-config/cros_config_mock.sh b/chromeos-config/cros_config_mock.sh
index 807b008..c344973 100755
--- a/chromeos-config/cros_config_mock.sh
+++ b/chromeos-config/cros_config_mock.sh
@@ -21,12 +21,12 @@
 Usage: $0 [OPTIONS...] PATH PROPERTY
 
 Optional arguments:
-  --configfs-image FILE   Path to configfs image.
-  --smbios-name NAME      Override the SMBIOS name from firmware.
-  --dt-compatible STRING  Add STRING to the device-tree compatible list.
-  --sku-id SKU            Override the SKU id from firmware.
-  --whitelabel-tag VALUE  Override the whitelabel tag from VPD.
-  --help                  Show this help message and exit.
+  --configfs-image FILE     Path to configfs image.
+  --smbios-name NAME        Override the SMBIOS name from firmware.
+  --dt-compatible STRING    Add STRING to the device-tree compatible list.
+  --sku-id SKU              Override the SKU id from firmware.
+  --custom-label-tag VALUE  Override the whitelabel tag from VPD.
+  --help                    Show this help message and exit.
 
 Positional arguments:
   PATH                    The path to get from config.
@@ -57,8 +57,8 @@
       SKU_ID="$2"
       shift
       ;;
-    --whitelabel-tag )
-      WHITELABEL_TAG="$2"
+    --custom-label-tag )
+      CUSTOM_LABEL_TAG="$2"
       shift
       ;;
     --help )
@@ -107,8 +107,12 @@
   SKU_ID="$(cut -b4- </sys/class/dmi/id/product_sku)"
 fi
 
-if [[ -f /sys/firmware/vpd/ro/whitelabel_tag && -z "${WHITELABEL_TAG}" ]]; then
-  read -r WHITELABEL_TAG </sys/firmware/vpd/ro/whitelabel_tag
+if [[ -f /sys/firmware/vpd/ro/custom_label_tag && -z "${CUSTOM_LABEL_TAG}" ]]; then
+  read -r CUSTOM_LABEL_TAG </sys/firmware/vpd/ro/custom_label_tag
+fi
+
+if [[ -f /sys/firmware/vpd/whitelabel_tag && -z "${CUSTOM_LABEL_TAG}" ]]; then
+  read -r CUSTOM_LABEL_TAG </sys/firmware/vpd/whitelabel_tag
 fi
 
 on_exit_unmount () {
@@ -147,7 +151,7 @@
     continue
   fi
 
-  if file_mismatch "${base}/identity/whitelabel-tag" "${WHITELABEL_TAG}"; then
+  if file_mismatch "${base}/identity/custom-label-tag" "${CUSTOM_LABEL_TAG}"; then
     continue
   fi