huhui b0dbe83643 set clk of apb1 to sysclk/4(21M), this can use 100K I2C clk 5 lat temu
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5.7.0 d67a815cfc setup project arch && compile OK 5 lat temu
GD32F3x0 b0dbe83643 set clk of apb1 to sysclk/4(21M), this can use 100K I2C clk 5 lat temu