Add runtime config entry for CSD led pattern

To silence complaints of not having it.
Reduce severity of sensord not available diagnostics

These will trigger on mce startup before dbus name query finishes.
Do not warn about libhybris missing fb power controls

It is normal that direct power control is not available and it is
done indirectly via early suspend.
Silence diagnostic output accidentally left at WARNING level

These might be interesting during debug run, but not by default.
Merge pull request #109 from spiiroin/silence_debug

Tone down too agressive logging