Resubmit: Initial add wvts to build

[ Merge of pa/2264578 ]

Test: make wvts

Bug: 209663123
Change-Id: If1382ed06a93bc34d327ee88bf46ff290e84f786
diff --git a/core/main.mk b/core/main.mk
index 0453cda..656343f 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -92,6 +92,9 @@
 -include test/catbox/tools/build/config.mk
 # CTS-Root-specific config.
 -include test/cts-root/tools/build/config.mk
+# WVTS-specific config.
+-include test/wvts/tools/build/config.mk
+
 
 # Clean rules
 .PHONY: clean-dex-files