Strip prebuilt shared library by default.

Strip prebuilt shared library but not try adding gnu debuglink.
It would fail if you try run the adding gnu debuglink command if a
prebuilt is already stripped.

Bug: 17177288
Change-Id: If5811865715c2437e45fbd329983ef1212ef0109
diff --git a/core/multi_prebuilt.mk b/core/multi_prebuilt.mk
index bc85cea..ed2fed6 100644
--- a/core/multi_prebuilt.mk
+++ b/core/multi_prebuilt.mk
@@ -76,8 +76,7 @@
      ) \
    ) \
   $(eval LOCAL_MODULE_SUFFIX := $(suffix $(LOCAL_SRC_FILES))) \
-  $(if $(filter user,$(TARGET_BUILD_VARIANT)), \
-    $(eval LOCAL_STRIP_MODULE := $(8))) \
+  $(eval LOCAL_STRIP_MODULE := $(8)) \
   $(eval include $(BUILD_PREBUILT)) \
  )
 endef