firmware: clean up samples for coding style issues

This fixes up a number of coding style issues in the firmware sample files.

Yeah, it still doesn't build properly yet, that's next...


Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>