kernel-resin.bbclass: Add CONFIG_PANIC_TIMEOUT
kernel-resin.bbclass: Add CONFIG_PANIC_TIMEOUT

Currently if the kernel panics, it is up to the device kernel
configuration if it timesout and reboots on a kernel panic.

Also, the watchdog if present does not reboot a device that is in
a panic state as the kernel watchdog driver keeps touching it.

Enforce a reboot on kernel panic from meta-resin.

Change-type: patch
Changelog-entry: Reboot device if there is a kernel panic
Signed-off-by: Zubair Lutfullah Kakakhel <0e069c2b28e50c7879834cb1889890ac34260249@resin.io>

resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin