Wait, I found this. "16.2 Recent Broadcom ChipsetThe Linux kernel comes with the brcm80211 driver by default. This driver supports bcm4313, bcm43224, bcm43224, bcm43225, bcm4329, bcm4330, bcm4334, bcm43241, bcm43235 (>= rev 3), bcm43236 (>= rev 3), bcm43238 (>= rev 3), bcm43143, bcm43242." - http://www.opensuse-guide.org/wlan.php
The raspberry pi wifi dongle has the BCM43143 chipset so it should work, right?
