powerpc: ppc4xx: Add a gpio.h header fileThis is required at present for device tree control. The ppc4xx does supportGPIOs but does not seem to have a proper driver. So this file is empty.Signed
powerpc: ppc4xx: Add a gpio.h header fileThis is required at present for device tree control. The ppc4xx does supportGPIOs but does not seem to have a proper driver. So this file is empty.Signed-off-by: Simon Glass <sjg@chromium.org>
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