brcm: add firmware for the BCM4358 PCIe device.

brcm: add firmware for the BCM4358 PCIe device.

This patch adds firmware for the BCM4358 2x2 11ac PCIe device.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Change-Id: I5c106e4e216dd7856de1e204a4d568714b015efc
Reviewed-on: http://hnd-swgit.sj.broadcom.com:8080/8118
Signed-off-by: Kyle McMartin <kyle@kernel.org>