linuxManualConfig: always depend on ubootTools

[alyssais]

Description of changes

Since 41f788b ("linuxManualConfig: use the default make target"), we don't know ahead of time whether the kernel build will attempt to produce a uImage in addition to whatever we're expecting it to build. ubootTools is not a big dependency, so let's just always include it.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.05 Release Notes (or backporting 22.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

[Ericson2314]

Idea makes sense to me.

[github-actions]

Backport failed for staging-23.05, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally.

git fetch origin staging-23.05
git worktree add -d .worktree/backport-233394-to-staging-23.05 origin/staging-23.05
cd .worktree/backport-233394-to-staging-23.05
git checkout -b backport-233394-to-staging-23.05
ancref=$(git merge-base 2a264a4a2070325921b13230b77620b175d2c559 e5e02f3214ae381142606cf5defc35888d73f883)
git cherry-pick -x $ancref..e5e02f3214ae381142606cf5defc35888d73f883