board: silabs: slstk3701a: add i2c2 node

[SiliconSignals]

Enable the I2C2 node on the EFM32GG11 SLSTK3701A board

[SiliconSignals]

logs:

uart:~$ device list
devices:
- gpio@40088400 (READY)
- leuart@4006a000 (READY)
- usart@40011000 (active)
- usart@40010000 (active)
- gpio@40088180 (READY)
- gpio@40088150 (READY)
- gpio@40088120 (READY)
- gpio@400880f0 (READY)
- gpio@400880c0 (READY)
- gpio@40088090 (READY)
- gpio@40088060 (READY)
- gpio@40088030 (READY)
- gpio@40088000 (READY)
- i2c@40089800 (READY)
- i2c@40089400 (READY)
- i2c@40089000 (READY)

[SiliconSignals]

Hi @jhedberg,

Thanks for the approval!

I'm not entirely familiar with the process, so could you let me know if there's anything else I need to do after the PR is approved?

[jhedberg]

I'm not entirely familiar with the process, so could you let me know if there's anything else I need to do after the PR is approved?

There's nothing else you need to do. The Zephyr project is right now in code freeze for Zephyr 4.0, so the PR should get merged after the release is out.

[jerome-pouiller]

I am not super familiar with devices that must enabled by default, but I believe we have to keep i2c "disabled".

[jerome-pouiller]

That's said, i2c0 and i2c1 are enable. So, I believe this patch is correct.