2b7a63b9b5
In commit e90f2b439e37db7cce0bb929932aaef847830e24 the I2C config has been adapted to the new I2C API. However, the pins of I2C_DEV(0) have been changed from PB6 and PB7 to PB8 and PB9. While PB8 and PB9 also can be used for I2C1 by remapping I2C1, this is not done. As a result, I2C1 was unusable. This commit restores the default I2C1 pins for I2C_DEV(0), resulting in I2C_DEV(0) becoming usable again.