Profiling use aprof, enable by LOCAL_ENABLE_APROF or LOCAL_ENABLE_APROF_JNI

Change-Id: Ia95dc7318e17c0804867b22e239edccc5cbec0af
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 66e6232..d4d55d4 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -78,6 +78,8 @@
 LOCAL_COPY_HEADERS:=
 LOCAL_FORCE_STATIC_EXECUTABLE:=
 LOCAL_ADDITIONAL_DEPENDENCIES:=
+LOCAL_ENABLE_APROF:=
+LOCAL_ENABLE_APROF_JNI:=
 LOCAL_COMPRESS_MODULE_SYMBOLS:=
 LOCAL_STRIP_MODULE:=
 LOCAL_POST_PROCESS_COMMAND:=true