ARM: dts: sun8i: sinlinx-sina33: Enable Reduced Serial Bus controller

The Reduced Serial Bus controller is used to talk to the onboard PMIC.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun8i-a33-sinlinx-sina33.dts

@@ -130,6 +130,10 @@ mmc0_cd_pin_sina33: mmc0_cd_pin@0 {
 	};
 };
 
+&r_rsb {
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pins_b>;