[runtimes] Use add_lit_testsuite to register lit testsuites

The runtimes build uses variables set by add_lit_testsuite to collect
testsuites from all the runtimes.

Differential Revision: https://reviews.llvm.org/D97913

GitOrigin-RevId: e1173c8794f4942d2cdddb090489ba5a6cc193e8
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 8dcd65d..d85dc41 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -76,7 +76,7 @@
   ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
   MAIN_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/lit.cfg.py")
 
-add_lit_target(check-cxxabi "Running libcxxabi tests"
+add_lit_testsuite(check-cxxabi "Running libcxxabi tests"
   ${CMAKE_CURRENT_BINARY_DIR}
   DEPENDS ${LIBCXXABI_TEST_DEPS}
   PARAMS "${LIBCXXABI_TEST_PARAMS}")