brcm: adding firmware for BCM4350 PCIe device

This patch adds firmware for the BCM4350 11ac PCIe device.
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kyle McMartin <jkkm@boosh.DHCP.thefacebook.com>

WHENCE

@@ -1949,6 +1949,7 @@ File: brcm/brcmfmac43242a.bin
 File: brcm/brcmfmac43143.bin
 File: brcm/brcmfmac43143-sdio.bin
 File: brcm/brcmfmac43455-sdio.bin
+File: brcm/brcmfmac4350-pcie.bin
 File: brcm/brcmfmac4354-sdio.bin
 File: brcm/brcmfmac4356-pcie.bin
 File: brcm/brcmfmac43569.bin