test: Update genasset.sh to use shrinkwrap to generate assets
The buildroot config is now upgraded from 2022.05.3 to 2024.05.2 but the test assets are still using the old 2022.05.3. While trying to update the same, it was preferred to move/update genasset.sh to shrinkwrap to generate assets instead to avoid such out of sync possibilities in the future.
Signed-off-by: Sudeep Holla sudeep.holla@arm.com
Edited by Sudeep Holla