mondrianwifi: dt: Update kgsl pwrlevels & add qcom,io-fraction

Change-Id: I0e6215446cf53be5b5a98ceb87df526ac1e1a4c5
mondrianwifi: Tone down battery log-spam

Change-Id: I5d7c7369cdfb9960fe9c1dd1c34f9e408fad0d3c