PCI: ixp4xx: Add device tree bindings for IXP4xx

This adds device tree bindings for the Intel IXP4xx
PCI controller which can be used as both host and
option.

Cc: devicetree@vger.kernel.org
Cc: Arn

PCI: ixp4xx: Add device tree bindings for IXP4xx

This adds device tree bindings for the Intel IXP4xx
PCI controller which can be used as both host and
option.

Cc: devicetree@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Krzysztof Halasa <khalasa@piap.pl>
Cc: Zoltan HERPAI <wigyori@uid0.hu>
Cc: Raylynn Knight <rayknight@me.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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