staging: ks7010: add example cfg file as a reference

We want to remove it, but to do so properly, it is good to have a
working example. Needs to be copied to /lib/firmware in order to be
used.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>