x86: link: Add pin configuration to the device tree
At present pin configuration on link does not use the standard mechanism, but some rather ugly custom code. As a first step to resolving this, add the pin configuration to the device tree. Four of the GPIOs must be available before relocation (for SDRAM pin strapping). Signed-off-by: NSimon Glass <sjg@chromium.org> Reviewed-by: NBin Meng <bmeng.cn@gmail.com>
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