[meta-intel] [meta-intel-iot-devkit][devkit-daisy-1.6.1] Intel Quark watchdog enablement

[Ong, Boon Leong]

>> For master branch on meta-intel-quark, maybe we can agree on creating
>> iot-devkit & iot-devkit-spi folder inside meta-intel-quark/recipes-
>kernel/linux/linux-yocto-quark/ and place watchdog.cfg respectively.
>> What is your thought here?
>
>That's an ok solution with me but why not just enable the watchdog everywhere?
>
My hunch tells me that the size has really max-out. That is why I would to propose
to have such split. Let me check on whether 8MB flash size constraint is hit with this driver added.
Will revert soonest.