Adding disk firmware programming capability to camcontrol

Hi,

I have got code developed by Andre Albsmeier that is capable of
programming firmware of hard drives from several vendors and  turned
it into a camcontrol command.

The posted patch (against RELENG_8_2) basically adds the following new
command to camcontrol:

camcontrol fwdownload [device id] [generic args] <-f fw_image> [-s]

I would appreciate it if FreeBSD experts in this area of code would
take the time to review this patch.

Thanks.

Nima Misaghian
Sandvine Incorporated