Add support for beagleconnect_freedom

- Test blinky_arduino
- Test hello_arduino

Signed-off-by: Ayush Singh <ayushdevel1325@gmail.com>

Author: Ayush1325

variants/beagleconnect_freedom/beagleconnect_freedom.overlay

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2024 Ayush Singh <ayush@beagleboard.org>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+ / {
+	zephyr,user {
+		digital-pin-gpios = <&gpio0 18 GPIO_ACTIVE_HIGH>;	/* 2.4GHz TX/RX */
+		builtin-led-gpios = <&gpio0 18 GPIO_ACTIVE_HIGH>;	/*  2.4GHz TX/RX  */
+		serials = <&uart0 &uart1>;
+		i2cs = <&i2c0>;
+	};
+ };

variants/beagleconnect_freedom/variants.h

@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2024 Ayush Singh <ayush@beagleboard.org>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* All the pins that are 100 + x are gpio1 pins and < 100 are in gpio0 */
+#pragma once
+
+#define LED_BUILTIN 0
+