dts: bflb: Add flash-controller chosen

Adds flash controller chosen to make CI happy

Signed-off-by: Camille BAUD <[email protected]>

Author: VynDragon

dts/riscv/bflb/bl60x.dtsi

@@ -57,6 +57,10 @@
 		};
 	};
 
+	chosen {
+		zephyr,flash-controller = &flashctrl;
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;

dts/riscv/bflb/bl61x.dtsi

@@ -71,6 +71,10 @@
 		};
 	};
 
+	chosen {
+		zephyr,flash-controller = &flashctrl;
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;

dts/riscv/bflb/bl70x.dtsi

@@ -56,6 +56,10 @@
 		};
 	};
 
+	chosen {
+		zephyr,flash-controller = &flashctrl;
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;