Liveopp improvements

- added APE_25_OPP state (reduced dma clock and some other) previously available only when in call
- added ability to change ape/ddr opp states from liveopp - before they were forced to max for frequencies above 400MHs
- improved state switching alg so that it's more stable - this allowed to use 300/500/700/900 MHz freqs safely
- reduced voltages where possible thanks to inproved stability