starfive visionfive2: use ubootVisionFive2

starfive/visionfive/v2/firmware.nix

@@ -46,7 +46,7 @@ in
         }
       );
 
-      uboot = (pkgs.callPackage ./uboot.nix { inherit (config.system.build) opensbi; }).overrideAttrs (
+      uboot = (pkgs.ubootVisionFive2.override { inherit (config.system.build) opensbi; }).overrideAttrs (
         _f: p: {
           src = if cfg.uboot.src != null then cfg.uboot.src else p.src;
           patches = if cfg.uboot.patches != null then cfg.uboot.patches else (p.patches or [ ]);

starfive/visionfive/v2/uboot.nix

@@ -1,17 +0,0 @@
-{
-  buildUBoot,
-  opensbi,
-}:
-
-buildUBoot {
-  extraMakeFlags = [
-    "OPENSBI=${opensbi}/share/opensbi/lp64/generic/firmware/fw_dynamic.bin"
-  ];
-
-  defconfig = "starfive_visionfive2_defconfig";
-
-  filesToInstall = [
-    "spl/u-boot-spl.bin.normal.out"
-    "u-boot.itb"
-  ];
-}