staging: nokia_h4p: move firmware macros to firmware part

As the TODO file suggests, move firmware file macros from the header
file to the file that deals with firmware. In the process also move
MODULE_FIRMWARE() instances to the same file. Remove the relevant item
from the TODO file.

Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>