staging: wlan-ng: remove unnecessary blank lines in prism2fw.c

This patch removes unnecessary blank lines in prism2fw.c file to
comply with the standard kernel coding style.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>