update_gpu_drivers: Add Mali Bifrost/Valhall ARC support

BUG=b:177276472
TEST=emerge-asurada arc-mali-drivers-valhall-bin
     emerge-kukui arc-mali-drivers-bifrost-bin

Change-Id: Ifdf0ceed320960639c6cf26d22fbe794ba94a65e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2845023
Tested-by: Fei Shao <fshao@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Commit-Queue: Fei Shao <fshao@chromium.org>
diff --git a/contrib/update_gpu_drivers.sh b/contrib/update_gpu_drivers.sh
index 60183dd..fe485ba 100755
--- a/contrib/update_gpu_drivers.sh
+++ b/contrib/update_gpu_drivers.sh
@@ -42,6 +42,14 @@
 #
 # Variable name: "PARAMS_${pn//-/_}"
 
+PARAMS_arc_mali_drivers_bifrost=(
+  "kukui kukui chipset-mt8183"
+)
+
+PARAMS_arc_mali_drivers_valhall=(
+  "asurada asurada chipset-mt8192"
+)
+
 PARAMS_mali_drivers=(
   "daisy daisy overlay-daisy"
   "kevin gru baseboard-gru"