boards: CYW920829M2EVK-02: enable hw-flow-control for uart2

- enable hw-flow-control for uart2
- added p3_0_scb2_uart_cts, p3_1_scb2_uart_rts in **-pinctrl.dtsi

Signed-off-by: Nazar Palamar <[email protected]>

Author: npal-cy

boards/infineon/cyw920829m2evk_02/cyw920829m2evk_02-pinctrl.dtsi

@@ -11,3 +11,11 @@
 &p3_2_scb2_uart_rx {
 	input-enable;
 };
+
+&p3_1_scb2_uart_rts {
+	drive-push-pull;
+};
+
+&p3_0_scb2_uart_cts {
+	input-enable;
+};

boards/infineon/cyw920829m2evk_02/cyw920829m2evk_02.dts

@@ -34,8 +34,9 @@ uart2: &scb2 {
 	compatible = "infineon,cat1-uart";
 	status = "okay";
 	current-speed = <115200>;
+	hw-flow-control;
 
-	pinctrl-0 = <&p3_3_scb2_uart_tx &p3_2_scb2_uart_rx>;
+	pinctrl-0 = <&p3_3_scb2_uart_tx &p3_2_scb2_uart_rx &p3_1_scb2_uart_rts &p3_0_scb2_uart_cts>;
 	pinctrl-names = "default";
 };