Add functions to provide target sdk version

Bug: http://b/21364029
Change-Id: I8648d1bff6c8fd6e7cd12da7f128e048b9f2829a
diff --git a/linker/linker.h b/linker/linker.h
index c7118ea..04b584e 100644
--- a/linker/linker.h
+++ b/linker/linker.h
@@ -429,4 +429,7 @@
 char* linker_get_error_buffer();
 size_t linker_get_error_buffer_size();
 
+void set_application_target_sdk_version(uint32_t target);
+uint32_t get_application_target_sdk_version();
+
 #endif