edify: update for bison 3.5

Getting rid of warning, so using new define for turning on verbose
errors:
%define parse.error verbose

Bug: 31194194
Test: N/A
Change-Id: I47c200a1e669b5c5fc53d392f32b4c264a42182d

edify/parser.yy

@@ -72,7 +72,7 @@ static Expr* Build(Function fn, YYLTYPE loc, size_t count, ...) {
 
 %parse-param {std::unique_ptr<Expr>* root}
 %parse-param {int* error_count}
-%error-verbose
+%define parse.error verbose
 
 /* declarations in increasing order of precedence */
 %left ';'