Add support for LOCAL_MODULE_SYMLINKS

Specifying LOCAL_MODULE_SYMLINKS will create symlinks to the installed
module in the same directory.

Change-Id: Idecb2b75f0c9999eb000eed9a79a989244ccf6c2
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 7733a3e..31b337a 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -192,6 +192,7 @@
 LOCAL_NOSANITIZE:=
 LOCAL_DBUS_PROXY_PREFIX:=
 LOCAL_INIT_RC:=
+LOCAL_MODULE_SYMLINKS:=
 LOCAL_MODULE_HOST_OS:=
 LOCAL_NOTICE_FILE:=
 # Used to replace the installed file of a presigned prebuilt apk in PDK fusion build,
@@ -355,6 +356,8 @@
 LOCAL_CLANG_64:=
 LOCAL_INIT_RC_32:=
 LOCAL_INIT_RC_64:=
+LOCAL_MODULE_SYMLINKS_32:=
+LOCAL_MODULE_SYMLINKS_64:=
 LOCAL_JAVA_LANGUAGE_VERSION:=
 LOCAL_CTS_GTEST_LIST_EXECUTABLE:=