[llvm] [tools] Fix `LLVM_USE_SANITIZE_COVERAGE` build (PR #87722)

[Nikita Popov via llvm-commits]

================
@@ -1,5 +1,7 @@
 set(LLVM_LINK_COMPONENTS
   BitReader
+  Core
+  Support
----------------
nikic wrote:

Hm yeah, after looking at the cmake code a bit I think we make the dependencies of shared objects private.

https://github.com/llvm/llvm-project/pull/87722