staging: ks7010: remove unnecessary function parameter

Function ks7010_upload_firmware() takes as parameters, two struct
pointers, one of which is a member of the other. This is unnecessary
since one can be accessed via the other.

Remove function parameter and fix all call sites.

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