solos: FPGA and firmware update support.

This is just a straight pull in of changes, syncing us up to 0.07 from
openadsl.sf.net

Signed-off-by: Nathan Williams <nathan@traverse.com.au>
Signed-off-by: Simon Farnsworth <simon@farnz.org.uk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>