board: rockchip: Correct i2c2 pinctrl for RGxx3

The pinctrl on the Anbernic RGxx3 for the i2c2 bus does not use the
default value, so explicitly define it.

Fixes: 6cf6fe25370c ("board: rockchip: add Anbernic RGXX3 Series Devices")
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
1 file changed