[HLSL] Add missing dependency to Frontend unittest (llvm#161738)

Recently, a bot fails on `DefinedStaticSamplerDump` unittest. After some
debugging, we come to the conclusion that the issue might because due to
a missing dependency when compiling. This adds that dependency that was
idenfied missing

Author: joaosaffran

llvm/unittests/Frontend/CMakeLists.txt

@@ -1,5 +1,6 @@
 set(LLVM_LINK_COMPONENTS
   Analysis
+  BinaryFormat
   Core
   FrontendHLSL
   FrontendOffloading