bcm4908: include U-Boot in images

This is a step forward in adding support for devices with U-Boot.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

target/linux/bcm4908/image/bootfs-generic.its

@@ -22,6 +22,20 @@
 			};
 		};
 
+		uboot {
+			description = "U-Boot";
+			data = /incbin/("${images_dir}/u-boot/u-boot-nodtb.bin");
+			os = "U-Boot";
+			arch = "arm64";
+			compression = "none";
+			load = <0x1000000>;
+			entry = <0x1000000>;
+
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+
 		kernel {
 			description = "Linux kernel";
 			data = /incbin/("${kernel}");
@@ -37,20 +51,35 @@
 			};
 		};
 
-		fdt_linux_RAX220 {
+		fdt_uboot {
 			description = "dtb";
-			data = /incbin/("${dts_dir}/broadcom/bcm4908/bcm4908-netgear-raxe500.dtb");
-			arch = "arm64";
+			data = /incbin/("${images_dir}/u-boot/u-boot.dtb");
 			type = "flat_dt";
 			compression = "none";
 
 			hash-1 {
 				algo = "sha256";
 			};
 		};
+
+		fdt_linux_RAX220 {
+			description = "dtb";
+			data = /incbin/("${dts_dir}/broadcom/bcm4908/bcm4908-netgear-raxe500.dtb");
+			arch = "arm64";
+			type = "flat_dt";
+			compression = "none";
+		};
 	};
 
 	configurations {
+		default = "conf_uboot";
+
+		conf_uboot {
+			description = "BRCM 63xxx with uboot";
+			fdt = "fdt_uboot";
+			loadables = "atf", "uboot";
+		};
+
 		conf_lx_RAX220 {
 			description = "BRCM 63xxx linux";
 			kernel = "kernel";