arm: kirkwood: Enable cpufreq and ondemand on kirkwood_defconfig
arm: kirkwood: Enable cpufreq and ondemand on kirkwood_defconfig

Now that we have a cpufreq driver for kirkwood, enable it in
kirkwood_defconfig and set the default governer to ondemand.

Signed-off-by: Andrew Lunn <02e0a999c50b1f88df7a8f5a04e1b76b35ea6a88@lunn.ch>
Signed-off-by: Jason Cooper <68c46a606457643eab92053c1c05574abb26f861@lakedaemon.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs