mb/google/fizz: Enable I2C bus 2

I2C bus 2 goes to the custom add-in card slot and it was disalbed cuase
it was idle.

Google CFM add-in card is going to use this I2C bus so it needs to be

TEST=Tested with add-in card on fizz hardware and verified I2C bus 2 is
working properly.

Change-Id: I2c9b5a9323fd51872e340c35005c4a3432716808
Signed-off-by: Zhongze Hu <frankhu@chromium.org>
Reviewed-on: https://review.coreboot.org/25258
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>
1 file changed