add missing verity tools to otatools target

Change-Id: I856e43ac9757cf082548646e50db8bbc8da71d0a
diff --git a/core/Makefile b/core/Makefile
index 8611468..68b76ec 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1165,7 +1165,10 @@
 	  $(HOST_OUT_EXECUTABLES)/simg2img \
 	  $(HOST_OUT_EXECUTABLES)/e2fsck \
 	  $(HOST_OUT_EXECUTABLES)/xdelta3 \
-	  $(HOST_OUT_EXECUTABLES)/syspatch_host
+	  $(HOST_OUT_EXECUTABLES)/syspatch_host \
+	  $(HOST_OUT_EXECUTABLES)/build_verity_tree \
+	  $(HOST_OUT_EXECUTABLES)/verity_signer \
+	  $(HOST_OUT_EXECUTABLES)/append2simg
 
 OTATOOLS := $(DISTTOOLS) \
 	  $(HOST_OUT_EXECUTABLES)/aapt