Automatically create .dSYM for libcompiler_rt.dylib when using Apple's internal build system

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@168625 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/make/lib_info.mk b/make/lib_info.mk
index 5e66816..31850f7 100644
--- a/make/lib_info.mk
+++ b/make/lib_info.mk
@@ -56,4 +56,4 @@
                     CC CFLAGS LDFLAGS FUNCTIONS OPTIMIZED \
                     RANLIB RANLIBFLAGS \
                     VISIBILITY_HIDDEN KERNEL_USE \
-                    SHARED_LIBRARY SHARED_LIBRARY_SUFFIX STRIP LIPO
+                    SHARED_LIBRARY SHARED_LIBRARY_SUFFIX STRIP LIPO DSYMUTIL