brcm: add firmware for BCM43340/1 SDIO devices

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

WHENCE

@@ -1864,6 +1864,7 @@ File: brcm/brcmfmac43236b.bin
 File: brcm/brcmfmac4329-sdio.bin
 File: brcm/brcmfmac4330-sdio.bin
 File: brcm/brcmfmac4334-sdio.bin
+File: brcm/brcmfmac43340-sdio.bin
 File: brcm/brcmfmac4335-sdio.bin
 File: brcm/brcmfmac43362-sdio.bin
 File: brcm/brcmfmac4339-sdio.bin