gn build: Fix port of 3cb2852

COMPILER_RT_EXEC_OUTPUT_DIR is expected to be the path where
hwasan_symbolize is installed, i.e. the bin subdirectory of the
build directory, but we were incorrectly setting it to the install
location of the runtime libraries. Fix it.

Author: pcc

llvm/utils/gn/secondary/compiler-rt/test/BUILD.gn

@@ -55,7 +55,8 @@ write_cmake_config("lit_common_configured") {
     "COMPILER_RT_ENABLE_INTERNAL_SYMBOLIZER_PYBOOL=False",
     "COMPILER_RT_HAS_NO_DEFAULT_CONFIG_FLAG_PYBOOL=True",
     "COMPILER_RT_INTERCEPT_LIBDISPATCH_PYBOOL=False",
-    "COMPILER_RT_RESOLVED_EXEC_OUTPUT_DIR=" + rebase_path(crt_current_out_dir),
+    "COMPILER_RT_RESOLVED_EXEC_OUTPUT_DIR=" +
+        rebase_path("$root_build_dir/bin"),
     "COMPILER_RT_RESOLVED_LIBRARY_OUTPUT_DIR=" +
         rebase_path(crt_current_out_dir),
     "COMPILER_RT_RESOLVED_OUTPUT_DIR=" + rebase_path(crt_current_out_dir),