Integrate u-boot-mtk/uart-output

Commit: seco-ne/3rd-party/u-boot/u-boot-mtk@31100930

configs:genio700: Set uart base to uart1

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Commit: seco-ne/3rd-party/u-boot/u-boot-mtk@d9688580

dts:wilk: Enable and configure uart1 for u-boot output

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Commit: seco-ne/3rd-party/u-boot/u-boot-mtk@14184cdf

dts:mt8188: Add uart1 node

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Commit: seco-ne/3rd-party/u-boot/u-boot-mtk@8b878bfd

configs:genio700: Set UART baud rate to 115200