These firmwares are for the BCM4366 3x3 802.11 ac chipsets, which also
comprise of BCM4366E or BCM43664 devices.

Edited to add WHENCE entry by Josh Boyer
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>