axon: Axon GPIO Description: Add note for i2c

[singhpriya88]

On GPIO Header there is only one I2C7 can be use directly else if you want to use more I2Cs on GPIO header then for that you have to follow the instruction mentioned as below because each I2C is given on MUXs and you can use anyone at a time from that mux of each I2Cs.

1. For using I2C2_M1 on header, you have to configure in device tree from I2C2_M4 to I2C2_M1. after that you can use it on header but at this time you can not use MIPI_D-CPHY RX Camera.

2. For using I2C1_M4 on header, you have to configure in device tree from I2C1_M2 to I2C1_M4. after that you can use it on header but at this time you can not use NPU and Type-C0 as a Display.

3. For using I2C5_M4 on header, you have to configure in device tree from I2C5_M0 to I2C5_M4. after that you can use it on header but at this time you can not use MIPI_D-CPHY TX Display.