Probably via something like
Code:
kdb set system/daemon/powerd/t1_timeout 600
but it requires a rw rootfs, may not be safe, may break updates, may need a restart to get taken into account, and I didn't test this the slightest bit.
(That's part of the reason I pulled the packages the code that's used in the first post came from).
[600 seconds seems to be the default value on K4/K5]