Broadcom BCM94321COEX2

Appears to be used in an Apple product (OUI 00:1B:63)
 * Apple Mac Mini (A1283) WLAN/Bluetooth Module teardown
 * BCM4321 (BB) + BCM2055 (RF) + BCM2046 (BT 2.1+ERD)
 * Skyworks SKY65255-12 - WLAN RF PA/FE chip