kernel, initrd: Remove legacy ubootChooser

pkgs/build-support/kernel/make-initrd.nix

@@ -12,13 +12,13 @@
 # `contents = {object = ...; symlink = /init;}' is a typical
 # argument.
 
-{ stdenv, perl, cpio, contents, ubootChooser, compressor, prepend
+{ stdenv, perl, cpio, contents, compressor, prepend, ubootTools
 , hostPlatform
 }:
 
 let
   inputsFun = ubootName : [ perl cpio ]
-    ++ stdenv.lib.optional (ubootName != null) [ (ubootChooser ubootName) ];
+    ++ stdenv.lib.optional (ubootName != null) ubootTools;
   makeUInitrdFun = ubootName : (ubootName != null);
 in
 stdenv.mkDerivation {

pkgs/os-specific/linux/kernel/manual-config.nix

@@ -1,5 +1,5 @@
 { runCommand, nettools, bc, perl, gmp, libmpc, mpfr, kmod, openssl
-, writeTextFile, ubootChooser
+, writeTextFile, ubootTools
 , hostPlatform
 }:
 
@@ -225,7 +225,7 @@ stdenv.mkDerivation ((drvAttrs config stdenv.platform (kernelPatches ++ nativeKe
   enableParallelBuilding = true;
 
   nativeBuildInputs = [ perl bc nettools openssl gmp libmpc mpfr ] ++ optional (stdenv.platform.uboot != null)
-    (ubootChooser stdenv.platform.uboot);
+    ubootTools;
 
   hardeningDisable = [ "bindnow" "format" "fortify" "stackprotector" "pic" ];
 
@@ -248,6 +248,6 @@ stdenv.mkDerivation ((drvAttrs config stdenv.platform (kernelPatches ++ nativeKe
       # crossDrv builds x86 tools on x86 (but arm uboot). If this is fixed, uboot
       # can just go into buildInputs (but not nativeBuildInputs since cp.uboot
       # may be different from stdenv.platform.uboot)
-      buildInputs = optional (cp.uboot != null) (ubootChooser cp.uboot).crossDrv;
+      buildInputs = optional (cp.uboot != null) ubootTools.crossDrv;
   };
 })

pkgs/top-level/all-packages.nix

@@ -13002,9 +13002,6 @@ with pkgs;
 
   tunctl = callPackage ../os-specific/linux/tunctl { };
 
-  # TODO(dezgeg): either refactor & use ubootTools directly, or remove completely
-  ubootChooser = name: ubootTools;
-
   # Upstream U-Boots:
   inherit (callPackage ../misc/uboot {})
     buildUBoot