[turbofan] Fix source position integration with Linux perf

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index a5149207e23d443d6fc68931127a7bc505ea203a..66b10cdc398306fc00ab9a189a2b71b3b0a9ceec 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -1086,10 +1086,9 @@ DEFINE_IMPLICATION(perf_basic_prof_only_functions, perf_basic_prof)
 DEFINE_BOOL(perf_prof, false,
             "Enable perf linux profiler (experimental annotate support).")
 DEFINE_NEG_IMPLICATION(perf_prof, compact_code_space)
-DEFINE_BOOL(perf_prof_debug_info, false,
-            "Enable debug info for perf linux profiler (experimental).")
 DEFINE_BOOL(perf_prof_unwinding_info, false,
             "Enable unwinding info for perf linux profiler (experimental).")
+DEFINE_IMPLICATION(perf_prof, perf_prof_unwinding_info)
 DEFINE_STRING(gc_fake_mmap, "/tmp/__v8_gc__",
               "Specify the name of the file for fake gc mmap used in ll_prof")
 DEFINE_BOOL(log_internal_timer_events, false, "Time internal events.")