versioner: extract strict warnings out of -v into its own flag.

Bug: None
Test: versioner -v; versioner -s
Change-Id: I8f6ac7064c6f05de0811677f7fcfce929a2568c1
diff --git a/tools/versioner/src/SymbolDatabase.cpp b/tools/versioner/src/SymbolDatabase.cpp
index 90c0c9f..bd4b99d 100644
--- a/tools/versioner/src/SymbolDatabase.cpp
+++ b/tools/versioner/src/SymbolDatabase.cpp
@@ -130,7 +130,7 @@
       }
 
       if (result.count(symbol_name) != 0) {
-        if (verbose) {
+        if (strict) {
           printf("duplicated symbol '%s' in '%s'\n", symbol_name.str().c_str(), file.str().c_str());
         }
       }