tests: drivers: can: api: support nuvoton numaker_m3334ki

Add support for Nuvoton NuMaker-M3334KI board

This target has only 4 MPU regions, so disable userspace test.

Signed-off-by: Chun-Chieh Li <ccli8@nuvoton.com>

Author: ccli8

tests/drivers/can/api/boards/numaker_m3334ki.conf

@@ -0,0 +1 @@
+CONFIG_TEST_USERSPACE=n

tests/drivers/can/api/boards/numaker_m3334ki.overlay

@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+/ {
+	chosen {
+		zephyr,canbus = &canfd0;
+	};
+};
+
+&pinctrl {
+	/* CAN TX/RX --> UNO D8/D9 */
+	canfd0_default: canfd0_default {
+		group0 {
+			pinmux = <PA5MFP_CANFD0_TXD>,
+				 <PA4MFP_CANFD0_RXD>;
+		};
+	};
+};
+
+&canfd0 {
+	pinctrl-0 = <&canfd0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};