update_program_fw: Switch to cros-workon

cros_workon is now deprecated. Use cros-workon instead.

BUG=none
TEST=cros lint

Change-Id: I7e27655ee2fd77b686a662dc859d59f228125c71
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2328392
Tested-by: Andrew McRae <amcrae@chromium.org>
Auto-Submit: Andrew McRae <amcrae@chromium.org>
Commit-Queue: Kangheui Won <khwon@chromium.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>
diff --git a/contrib/update_program_fw b/contrib/update_program_fw
index bbdf941..f57c1f8 100755
--- a/contrib/update_program_fw
+++ b/contrib/update_program_fw
@@ -88,8 +88,8 @@
       gerrit -i abandon "${cl}"
     done
   fi
-  "cros_workon-${FLAGS_board}" stop "chromeos-base/chromeos-firmware-${FLAGS_board}"
-  "cros_workon-${FLAGS_board}" stop "chromeos-base/chromeos-config-bsp-${FLAGS_board}-private"
+  "cros-workon-${FLAGS_board}" stop "chromeos-base/chromeos-firmware-${FLAGS_board}"
+  "cros-workon-${FLAGS_board}" stop "chromeos-base/chromeos-config-bsp-${FLAGS_board}-private"
   repo abandon "${BRANCH}"
   die "$*"
 }
@@ -550,8 +550,8 @@
 #
 # Remove any previous attempts to build the firmware.
 #
-"cros_workon-${FLAGS_board}" stop "chromeos-base/chromeos-firmware-${FLAGS_board}"
-"cros_workon-${FLAGS_board}" stop "chromeos-base/chromeos-config-bsp-${FLAGS_board}-private"
+"cros-workon-${FLAGS_board}" stop "chromeos-base/chromeos-firmware-${FLAGS_board}"
+"cros-workon-${FLAGS_board}" stop "chromeos-base/chromeos-config-bsp-${FLAGS_board}-private"
 cd "${OVERLAY}"
 branch
 cd "${DEVCONTRIB}"