board: arm: Fix nucleo_g071rb arduino connector dts
board: arm: Fix nucleo_g071rb arduino connector dts

According to ST documentation for nucleo-g071rb board:
https://www.st.com/resource/en/schematic_pack/mb1360-g071rb-c01_schematic.pdf
the D0 and D1 lines in the Arduino UNO connector are mapped to the PC5
and PC4 pins.

Signed-off-by: Raúl Sánchez Siles <eb8c52bc8c28dcb70dc7913121be9a2e7ff5b0a6@k-lagan.com>

Vudentz/zephyr,finikorg/zephyr,galak/zephyr,nashif/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,nashif/zephyr,finikorg/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,Vudentz/zephyr,finikorg/zephyr,nashif/zephyr,nashif/zephyr,Vudentz/zephyr,Vudentz/zephyr,galak/zephyr,Vudentz/zephyr