- supported.conf: Update the list of i2c bus drivers.
      - i2c-isa is gone.
      - i2c-i810, i2c-prosavage and i2c-savage4 are deprecated and will
        be removed soon, mark as unsupported.
      - i2c-voodoo3 has very limited usefulness, mark as unsupported.
      - i2c-powermac is new, mark as supported.
    - supported.conf: Update the list of i2c chip drivers.
      - ds1337, ds1374, rtc8564 and x1205 are gone (RTC drivers, moved
        to drivers/rtc).
      - pca9539, pcf8574 and pcf8575 are deprecated (new GPIO drivers
        exist in drivers/gpio), mark as unsupported.
      - ds1682, max6875 and tsl2550 are new, mark as supported.