[VOL-5171] - Openolt-adapter openolt.proto version to old

agent/Makefile.in
BUILDING.md
-----------
Update voltha-protos from version 5.2.1 to 5.4.10

Change-Id: I8be4ddb35de7465962aa9fdec688ae6e647ce5c4
diff --git a/agent/Makefile.in b/agent/Makefile.in
index 425e034..d0986f0 100644
--- a/agent/Makefile.in
+++ b/agent/Makefile.in
@@ -52,7 +52,7 @@
 # This specifies the GIT tag in https://github.com/opencord/voltha-protos
 # repo that we need to refer to, to pick the right version of
 # openolt.proto and tech_profile.proto
-OPENOLT_PROTO_VER ?= v5.2.1
+OPENOLT_PROTO_VER ?= v5.4.10
 
 # Variables used for Inband build
 INBAND = "n"