treewide: move build helper to more fitting places

Change-Id: I3d0cfe9283222d403ae369ec9db09201ad511e15
Reviewed-on: https://review.monogon.dev/c/monogon/+/3327
Reviewed-by: Serge Bazanski <serge@monogon.tech>
Tested-by: Jenkins CI
diff --git a/osbase/kmod/BUILD.bazel b/osbase/kmod/BUILD.bazel
index a8ade05..4bf0fb5 100644
--- a/osbase/kmod/BUILD.bazel
+++ b/osbase/kmod/BUILD.bazel
@@ -1,5 +1,5 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
-load("//metropolis/node/build/fwprune:def.bzl", "fsspec_linux_firmware")
+load("//osbase/build/fwprune:def.bzl", "fsspec_linux_firmware")
 load("//osbase/test/ktest:ktest.bzl", "ktest")
 
 go_library(