cleanup: BB-UART4-00A0.dts: update /usart4

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

Author: RobertCNelson

src/arm/overlays/BB-UART4-00A0.dts

@@ -35,13 +35,9 @@
 	};
 };
 
-/ {
-	fragment@3 {
-		target = <&uart4>;
-		__overlay__ {
-			status = "okay";
-			pinctrl-names = "default";
-			pinctrl-0 = <&bb_uart4_pins>;
-		};
-	};
+&uart4 {
+	/* sudo agetty 115200 ttyS4 */
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&bb_uart4_pins>;
 };