brcm: add firmware for bcm4366 device

This patch adds firmware for the bcm4366 11ac wlan device which
is supported by the brcmfmac driver since commit 55acca90da52
("brcmfmac: Add support for the BCM4365 and BCM4366 PCIE devices").

Cc: Rafal Milecki <zajec5@gmail.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kyle McMartin <kyle@kernel.org>

WHENCE

@@ -2035,6 +2035,7 @@ File: brcm/brcmfmac43569.bin
 File: brcm/brcmfmac43570-pcie.bin
 File: brcm/brcmfmac43602-pcie.bin
 File: brcm/brcmfmac43602-pcie.ap.bin
+File: brcm/brcmfmac4366b-pcie.bin
 File: brcm/brcmfmac4371-pcie.bin
 
 Licence: Redistributable. See LICENCE.broadcom_bcm43xx for details.