boards/arm: nucleo_f767zi: enabling dac for nucleo_f767zi in device tree

Enabling DAC support for STM32 nucleo_f767zi in device tree.
Documentation has been updated.

Signed-off-by: Sidhdharth Yadav <[email protected]>

Author: sarthsmart

boards/arm/nucleo_f767zi/doc/index.rst

@@ -122,6 +122,9 @@ features:
 +-----------+------------+-------------------------------------+
 | RNG       | on-chip    | True Random number generator        |
 +-----------+------------+-------------------------------------+
+| DAC       | on-chip    | DAC Controller                      |
++-----------+------------+-------------------------------------+
+
 
 (*) nucleo_f767zi with soc cut-A (Device marking A) has some ethernet
     instability (https://github.com/zephyrproject-rtos/zephyr/issues/26519).

boards/arm/nucleo_f767zi/nucleo_f767zi.dts

@@ -135,6 +135,11 @@
 	status = "okay";
 };
 
+&dac1 {
+	status = "okay";
+	pinctrl-0 = <&dac_out1_pa4>;
+};
+
 &rng {
 	status = "okay";
 };

boards/arm/nucleo_f767zi/nucleo_f767zi.yaml

@@ -23,3 +23,4 @@ supported:
   - watchdog
   - counter
   - can
+  - dac