third_party: expose firmware and ucode targets

That way we don't have to redefine it with every target that does
any kind of takeover.

Change-Id: I816b42a87c755da7b42944b2768f71b53d8d77f3
Reviewed-on: https://review.monogon.dev/c/monogon/+/2929
Tested-by: Jenkins CI
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
diff --git a/metropolis/installer/BUILD.bazel b/metropolis/installer/BUILD.bazel
index 3b4144c..f94d134 100644
--- a/metropolis/installer/BUILD.bazel
+++ b/metropolis/installer/BUILD.bazel
@@ -51,7 +51,7 @@
     name = "kernel",
     cmdline = "console=ttyS0,115200 console=tty0 quiet",
     initrd = [
-        "//metropolis/node:ucode",
+        "//third_party:ucode",
         ":initramfs",
     ],
     kernel = "//third_party/linux",