[VOL-1635] This OpenOLT agent supports the BAL V3.0.3.3 SDK.
The APIs call,variables and structures has been changed to BAL v3.0.
OLT activation from voltha-1.7 is successful.

Change-Id: I2096251262ef515a3dbf579eca806fc551bdecf1
diff --git a/protos/Makefile b/protos/Makefile
index aa5f8da..6ee661b 100644
--- a/protos/Makefile
+++ b/protos/Makefile
@@ -28,7 +28,7 @@
 all: googleapis libopenoltapi.a
 
 libopenoltapi.a: $(OBJS)
-	ar ru $@ $^
+	ar cr $@ $^
 	ranlib $@
 
 googleapis: