[CMake] Add fuzzer as a component for runtime builds

Calling `add_compiler_rt_component` sets up the component connection between runtime builds and the parent CMake configuration. Adding this call allows specifying `fuzzer` as a `LLVM_RUNTIME_DISTRIBUTION_COMPONENT`.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@358780 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/fuzzer/CMakeLists.txt b/lib/fuzzer/CMakeLists.txt
index aa62995..602f332 100644
--- a/lib/fuzzer/CMakeLists.txt
+++ b/lib/fuzzer/CMakeLists.txt
@@ -84,6 +84,8 @@
 
 set(FUZZER_SUPPORTED_OS ${SANITIZER_COMMON_SUPPORTED_OS})
 
+add_compiler_rt_component(fuzzer)
+
 add_compiler_rt_object_libraries(RTfuzzer
   OS ${FUZZER_SUPPORTED_OS}
   ARCHS ${FUZZER_SUPPORTED_ARCH}