util/cbfstool: Revise lex/yacc (bison) generation

Revise the Makefile.inc rules for generating FMD parser files.

- lex:  If --header-file is supported then the lex (usually flex) should
        also support '-o' so we don't need to do redirection (-t).

- yacc: Bison is already required by bincfg and sconfig so we
        can change the default parser compiler to Bison. That also
	allows us to use -o and --defines to override the output files.

- both: Line directives are only helpful when debugging the scanner and
        the parser, so we should remove them to get better git diff
	results  (-L for lex, -l for bison).

Also regenerated the shipped files with latest version of flex (2.6.4)
and bison (3.8.2).

Change-Id: I15b58ff65dcd9f3f3a6095aa004091ff733ffec3
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75851
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

util/cbfstool/fmd_parser.h_shipped

@@ -1,8 +1,9 @@
-/* A Bison parser, made by GNU Bison 3.0.4.  */
+/* A Bison parser, made by GNU Bison 3.8.2.  */
 
 /* Bison interface for Yacc-like parsers in C
 
-   Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2021 Free Software Foundation,
+   Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -15,7 +16,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* As a special exception, you may create a larger work that contains
    part or all of the Bison parser skeleton and distribute that work
@@ -30,8 +31,12 @@
    This special exception was added by the Free Software Foundation in
    version 2.2 of Bison.  */
 
-#ifndef YY_YY_Y_TAB_H_INCLUDED
-# define YY_YY_Y_TAB_H_INCLUDED
+/* DO NOT RELY ON FEATURES THAT ARE NOT DOCUMENTED in the manual,
+   especially those whose name start with YY_ or yy_.  They are
+   private implementation details that can be changed or removed.  */
+
+#ifndef YY_YY_V_CROS_COREBOOT_UTIL_CBFSTOOL_FMD_PARSER_H_SHIPPED_INCLUDED
+# define YY_YY_V_CROS_COREBOOT_UTIL_CBFSTOOL_FMD_PARSER_H_SHIPPED_INCLUDED
 /* Debug traces.  */
 #ifndef YYDEBUG
 # define YYDEBUG 0
@@ -40,7 +45,6 @@
 extern int yydebug;
 #endif
 /* "%code requires" blocks.  */
-#line 34 "fmd_parser.y" /* yacc.c:1909  */
 
 #include "fmd.h"
 #include "option.h"
@@ -65,33 +69,29 @@ struct flashmap_descriptor *parse_descriptor(
 	struct unsigned_option size, struct descriptor_list children);
 void yyerror(const char *s);
 
-#line 69 "y.tab.h" /* yacc.c:1909  */
 
-/* Token type.  */
+/* Token kinds.  */
 #ifndef YYTOKENTYPE
 # define YYTOKENTYPE
   enum yytokentype
   {
-    INTEGER = 258,
-    OCTAL = 259,
-    STRING = 260,
-    FLAG_CBFS = 261,
-    FLAG_PRESERVE = 262
+    YYEMPTY = -2,
+    YYEOF = 0,                     /* "end of file"  */
+    YYerror = 256,                 /* error  */
+    YYUNDEF = 257,                 /* "invalid token"  */
+    INTEGER = 258,                 /* INTEGER  */
+    OCTAL = 259,                   /* OCTAL  */
+    STRING = 260,                  /* STRING  */
+    FLAG_CBFS = 261,               /* FLAG_CBFS  */
+    FLAG_PRESERVE = 262            /* FLAG_PRESERVE  */
   };
+  typedef enum yytokentype yytoken_kind_t;
 #endif
-/* Tokens.  */
-#define INTEGER 258
-#define OCTAL 259
-#define STRING 260
-#define FLAG_CBFS 261
-#define FLAG_PRESERVE 262
 
 /* Value type.  */
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-
 union YYSTYPE
 {
-#line 25 "fmd_parser.y" /* yacc.c:1909  */
 
 	unsigned intval;
 	char *strval;
@@ -100,9 +100,8 @@ union YYSTYPE
 	union flashmap_flags flags;
 	struct descriptor_list region_listhdr;
 
-#line 104 "y.tab.h" /* yacc.c:1909  */
-};
 
+};
 typedef union YYSTYPE YYSTYPE;
 # define YYSTYPE_IS_TRIVIAL 1
 # define YYSTYPE_IS_DECLARED 1
@@ -111,6 +110,8 @@ typedef union YYSTYPE YYSTYPE;
 
 extern YYSTYPE yylval;
 
+
 int yyparse (void);
 
-#endif /* !YY_YY_Y_TAB_H_INCLUDED  */
+
+#endif /* !YY_YY_V_CROS_COREBOOT_UTIL_CBFSTOOL_FMD_PARSER_H_SHIPPED_INCLUDED  */