I2c address

Check the pinmux table from download center.
The I2C0_SCL(pin header) map to i2c2_clk(SFIO) that tell it’s i2c2-1. i2c2 from HW and minus 1 to get software bus.

And the I2C1_XX is map to i2c9 aka i2c8(i2c@31e0000)