contrib/dut-console: Add vmlinux-gdb.py to safe path

BUG=none
TEST=Use gdb, no more
   warning: File "/build/asurada/usr/lib/debug/boot/vmlinux-gdb.py"
   auto-loading has been declined by your `auto-load safe-path' set
   to "$debugdir:$datadir/auto-load".

Change-Id: I960a4b168c8b908b0044bde7e2eec0861dadaaac
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2309509
Commit-Queue: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Auto-Submit: Nicolas Boichat <drinkcat@chromium.org>
diff --git a/contrib/dut-console b/contrib/dut-console
index d48f64b..8601b51 100755
--- a/contrib/dut-console
+++ b/contrib/dut-console
@@ -143,6 +143,7 @@
     echo "You can now use kdbg inside the chroot with a command like:"
     echo '${CROSS_ARCH}-gdb \
         /build/${BOARD}/usr/lib/debug/boot/vmlinux \
+        -iex "add-auto-load-safe-path /build/${BOARD}/usr/lib/debug/boot/vmlinux-gdb.py" \
         -ex "target remote $(cat '"${spath_in}"'_gdb)"'
   fi