add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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CONFIG_CPU_MIPS64_R2=y
CONFIG_MIPS_O32_FP64_SUPPORT=y
CONFIG_64BIT=y
CONFIG_MIPS32_O32=y
CONFIG_MIPS32_N32=y