Change priv_gst_parse_yylex to fit new bison version, else we will
get following error:
| grammar.tab.c: In function 'priv_gst_parse_yyparse':
| grammar.tab.c:67:25: error: too few arguments to function 'priv_gst_parse_yylex'
| #define yylex priv_gst_parse_yylex
| ^
(From OE-Core rev: e20e186959c64a6cb405761417969429ddf6011e)
Signed-off-by: Chong Lu <Chong.Lu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>