ndn-tools: Fixing package (downgrade sphinx requirement)

Change-Id: I948b59eda16c55285b26031e9e699ab4c8c9a83b
diff --git a/ndn-tools/Makefile b/ndn-tools/Makefile
index 2eac319..71856ff 100644
--- a/ndn-tools/Makefile
+++ b/ndn-tools/Makefile
@@ -8,7 +8,7 @@
 NAME=ndn-tools
 
 # Package version
-VERSION=22.12-15-g7e9d7e4f
+VERSION=22.12-15-g7e9d7e4f-bp3
 
 # PPA version
 PPA_VERSION=1