new_match
struct eps *new_match(const char *, const char *);
: MATCH STRING STRING SEMICOLON { $$ = new_match($2, $3); }
{ $$ = new_match(strdup("device-name"), $2); }
{ $$ = new_match(strdup("class"), $2); }
{ $$ = new_match(strdup("subdevice"), $2); }