brcm: provide new firmwares for BCM4366 chipset

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>

WHENCE

@@ -2391,6 +2391,7 @@ File: brcm/brcmfmac4358-pcie.bin
 File: brcm/brcmfmac43602-pcie.bin
 File: brcm/brcmfmac43602-pcie.ap.bin
 File: brcm/brcmfmac4366b-pcie.bin
+File: brcm/brcmfmac4366c-pcie.bin
 File: brcm/brcmfmac4371-pcie.bin
 
 Licence: Redistributable. See LICENCE.broadcom_bcm43xx for details.