Turn off LTO for skia_nanobench on Android

This binary triggers a compiler bug when built with ThinLTO. Opt it out
of LTO to workaround the breakage.

Change-Id: Idf23d384328d19c5a146375d466a568ed2f0a827
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/495596
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Derek Sollenberger <djsollen@google.com>

gn/gn_to_bp.py

@@ -387,6 +387,10 @@ cc_test {
     srcs: [
         $nanobench_srcs
     ],
+
+    lto: {
+        never: true,
+    },
 }
 
 cc_library_shared {