There are tricky DMA/cache related issue on the imx233 which could
pop up with the old driver. The new one ensures that all dma
tranfers are cache safe by using an intermediate buffer.
Change-Id: I72060682d1c285c83ae16455cfdb62f372b5d687
Only enable fmradio_i2c once with _init() called from system.
Move actual i2c init to system for consistency.
Move tuner power pin setup to power instead of fmradio.
Change-Id: Idb56bfba5803f71b5d049f174c48d2afb969a6ea