ITE: drivers/i2c: Change GPIO output type to open-drain in recovery mode

If I2C recovery mode uses GPIO push-pull to drive(3.3v), it will result
leakage in a pull-up voltage of 1.8V on the power rail, leading to
damage to 1.8V devices, including SoC, sensors.
Therefore, the recovery mode should be changed to GPIO open-drain type
to avoid this.

Signed-off-by: Tim Lin <tim2.lin@ite.corp-partner.google.com>