ARM: dts: rockchip: Add i2c2 node to rv1126

Add i2c2 node and i2c2_xfer pinctrl for Rockchip RV1126

Signed-off-by: Tim Lunn <tim@feathertop.org>
Link: https://lore.kernel.org/r/20231203124004.2676174-5-tim@feathertop.org


Signed-off-by: Heiko Stuebner <heiko@sntech.de>