uksm: Tunings for smartphone usage and relocate run default value

In smartphones we care about cpu usage spikes and battery consumption.
Lowered pages per scan and allowed uksm to sleep more after each scan.

Finally lowered priority of uksm daemon, for even smoother user experience

Signed-off-by: CTCaer <ctcaer@gmail.com>
Signed-off-by: garwedgess <garethwilliams21@gmail.com>