Staging: ft1000: Change C99 comments in ft1000_dnld.c

This simple patch fixes the ERRORs found by checkpatch.pl in the file
ft1000_dnld.c by switching to the standard Kernel comment style.

Signed-off-by: Dylan Socolobsky <dsocolobsky@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>