Add arch bcmbca device tree binding document for Broadcom ARM based
broadband SoC chipsets. In this change, only BCM47622 is added. Other
chipsets will be added in the future.
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
