applications: connectivity_bridge: Replace deprecated Kconfig

Configuration of the UART mode with RX byte counting has been
moved to the devicetree and CONFIG_UART_x_NRF_HW_ASYNC is now
deprecated. Move configuration to the device tree.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>

Author: nordic-krch

applications/connectivity_bridge/boards/thingy91_nrf52840.overlay

@@ -35,8 +35,23 @@
 	};
 };
 
+/* Timer used by UARTE0 for byte counting. */
+&timer1 {
+	status = "reserved";
+};
+
+/* Timer used by UARTE1 for byte counting. */
+&timer2 {
+	status = "reserved";
+};
+
+&uart0 {
+	timer = <&timer1>;
+};
+
 &uart1 {
 	status = "okay";
+	timer = <&timer2>;
 };
 
 &zephyr_udc0 {

applications/connectivity_bridge/boards/thingy91x_nrf5340_cpuapp.overlay

@@ -34,12 +34,24 @@
 	};
 };
 
+/* Timer used by UARTE0 for byte counting. */
+&timer1 {
+	status = "reserved";
+};
+
+/* Timer used by UARTE1 for byte counting. */
+&timer2 {
+	status = "reserved";
+};
+
 &uart0 {
 	status = "okay";
+	timer = <&timer1>;
 };
 
 &uart1 {
 	status = "okay";
+	timer = <&timer2>;
 };
 
 &zephyr_udc0 {

applications/connectivity_bridge/prj.conf

@@ -66,10 +66,6 @@ CONFIG_UART_LINE_CTRL=y
 CONFIG_UART_ASYNC_API=y
 CONFIG_UART_0_ASYNC=y
 CONFIG_UART_1_ASYNC=y
-CONFIG_UART_0_NRF_HW_ASYNC=y
-CONFIG_UART_1_NRF_HW_ASYNC=y
-CONFIG_UART_0_NRF_HW_ASYNC_TIMER=1
-CONFIG_UART_1_NRF_HW_ASYNC_TIMER=2
 CONFIG_UART_USE_RUNTIME_CONFIGURE=y
 CONFIG_NRFX_UARTE=y
 CONFIG_NRFX_TIMER=y