tests: drivers: uart: uart_elementary: update configurations

changes test configuration for nucleo_h753zi and nucleo_g071rb

- nucleo_g071rb

 Delete undefined USB node to resolve CI failure.
 Update CTS and RTS pin signals to avoid another conflict.

- nucleo_h753zi

 Add CTS and RTS pins.

- stm32u083c_dk

  Finally, remove stm32u083c_dk due to pin conflicts
  (see UM3292 table 14).

- update sample.yaml to exclude nucleo_h743zi, which will no
  longer be available for testing. Also remove stm32u083c_dk
  from CI testing.

Signed-off-by: Fabrice DJIATSA <[email protected]>

Author: djiatsaf-st

tests/drivers/uart/uart_elementary/boards/nucleo_g071rb.overlay

@@ -5,7 +5,7 @@
  */
 
 dut: &usart1 {
-	pinctrl-0 = <&usart1_tx_pb6 &usart1_rx_pb7 &usart1_rts_pa12 &usart1_cts_pa11>;
+	pinctrl-0 = <&usart1_tx_pb6 &usart1_rx_pb7 &usart1_rts_pb3 &usart1_cts_pb4>;
 	dmas = <&dmamux1 3 51 STM32_DMA_PERIPH_TX>,
 	       <&dmamux1 4 50 STM32_DMA_PERIPH_RX>;
 	dma-names = "tx", "rx";
@@ -19,7 +19,3 @@ dut: &usart1 {
 &dmamux1 {
 	status = "okay";
 };
-
-&usb {
-	status = "disabled"
-};

tests/drivers/uart/uart_elementary/boards/nucleo_h753zi.overlay

@@ -8,7 +8,7 @@ dut: &usart2 {
 	dmas = <&dmamux1 2 44 STM32_DMA_PERIPH_TX>,
 	       <&dmamux1 3 43 STM32_DMA_PERIPH_RX>;
 	dma-names = "tx", "rx";
-	pinctrl-0 = <&usart2_tx_pd5 &usart2_rx_pd6>;
+	pinctrl-0 = <&usart2_tx_pd5 &usart2_rx_pd6 &usart2_rts_pd4 &usart2_cts_pd3>;
 	pinctrl-names = "default";
 	current-speed = <115200>;
 	hw-flow-control;

tests/drivers/uart/uart_elementary/boards/stm32u083c_dk.overlay

@@ -32,10 +32,9 @@ tests:
       - nucleo_f091rc
       - nucleo_g071rb
       - nucleo_g474re
-      - nucleo_h743zi
+      - nucleo_h753zi
       - nucleo_l152re
       - stm32n6570_dk/stm32n657xx/sb
-      - stm32u083c_dk
     integration_platforms:
       - nrf54h20dk/nrf54h20/cpuapp
   drivers.uart.uart_elementary_dual_nrf54h: