Use image_files map instead of symbol_files to find executable for Load+Run on FVP (#98)

Author: VladimirUmek

templates/FVP.adapter.json

@@ -33,7 +33,7 @@
             "<% else if (typeof config.args === 'string' && config.args.trim().length > 0) { %>",
             "<%= config.args.trim().split(/\\s+/).join('\\n') %>\n",
             "<% } %>",
-            "<% const files = symbol_files.map(s => s.file) %>",
+            "<% const files = image_files.map(s => s.file) %>",
             "<% for (const file of files) { %>",
             "-a", "<%= file %>\n",
             "<% } %>"