dnm: additional dts definitions for draft evaluation.

This commit should be removed once the pr is not in draft status
anymore.
It adds some additionl definitions which are not intended to be merged.
Those definitions enable 2 can instances and the shared irq driver
on the nucleo_g0b1re board.

Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>

boards/arm/nucleo_g0b1re/nucleo_g0b1re.dts

@@ -129,6 +129,14 @@
 	pinctrl-0 = <&dac1_out1_pa4>;
 };
 
+&shared_irq21 {
+	status = "okay";
+};
+
+&shared_irq22 {
+	status = "okay";
+};
+
 &can1 {
 	pinctrl-0 = <&fdcan1_rx_pa11 &fdcan1_tx_pa12>;
 	bus-speed = <125000>;
@@ -140,6 +148,17 @@
 	status = "okay";
 };
 
+&can2 {
+	pinctrl-0 = <&fdcan2_rx_pb5 &fdcan2_tx_pb6>;
+	bus-speed = <125000>;
+	sjw = <1>;
+	sample-point = <875>;
+	bus-speed-data = <1000000>;
+	sjw-data = <1>;
+	sample-point-data = <875>;
+	status = "okay";
+};
+
 &flash0 {
 	partitions {
 		compatible = "fixed-partitions";