firmware installer for the b43 driver

 This package downloads and installs the firmware needed by the b43
 kernel driver for some Broadcom 43xx wireless network cards.
 .
 Supported chipsets:
  * BCM4306/3;
  * BCM4311;
  * BCM4318;
  * BCM4321;
  * BCM4322 (only 14e4:432b);
  * BCM4312 (with Low-Power a.k.a. LP-PHY).