The following commands will install and get running the Broadcom wireless drivers on a late 2011 Macbook Pro.  As usual, run all the command below as root:

yum -y install b43-fwcutter
cd /tmp
wget http://www.lwfinger.com/b43-firmware/broadcom-wl-5.100.138.tar.bz2
tar -xvjf broadcom-wl-5.100.138.tar.bz2
cd broadcom-wl-5.100.138
b43-fwcutter -w /lib/firmware linux/wl_apsta.o
service NetworkManager restart