STM32MP157F-DK2 is missing I2C3_SDA at CN2, Arduino connectors although it has I2C3_SCL at PA8. Is it possible to bring I2C3_SDA to PG8 by modifying pinctrl-stm32mp157.c, stm32mp15-pinctrl.dtsi, stm32mp157f-dk2.dts and then no need to use STM32CubeMX...