staging: ks7010: fix checkpatch BLOCK_COMMENT_STYLE

Checkpatch emits WARNING: Block comments use a trailing */ on a
separate line.

Move comments to (kernel doc format) struct comment.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>