ARM: dts: sunxi: h3/h5: add missing uart2 rts/cts pins

uart1 and uart3 had existing pin definitions for the rts/cts pairs.
Add definitions for uart2 as well.
Signed-off-by: Karl Palsson <karlp@tweak.net.au>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

arch/arm/boot/dts/sunxi-h3-h5.dtsi

@@ -472,6 +472,11 @@ uart2_pins: uart2-pins {
 				function = "uart2";
 			};
 
+			uart2_rts_cts_pins: uart2-rts-cts-pins {
+				pins = "PA2", "PA3";
+				function = "uart2";
+			};
+
 			uart3_pins: uart3-pins {
 				pins = "PA13", "PA14";
 				function = "uart3";