kconfig: remove duplicated file name and lineno of recursive inclusion

As in the unit test, the error message for the recursive inclusion
looks like this:

  Kconfig.inc1:4: recursive inclusion detected. Inclusion path:
    current file : 'Kconfig.inc1'
    included from: 'Kconfig.inc3:1'
    included from: 'Kconfig.inc2:3'
    included from: 'Kconfig.inc1:4'

The 'Kconfig.inc1:4' is duplicated in the first and last lines.
Also, the single quotes do not help readability.

Change the message like follows:

  Recursive inclusion detected.
  Inclusion path:
    current file : Kconfig.inc1
    included from: Kconfig.inc3:1
    included from: Kconfig.inc2:3
    included from: Kconfig.inc1:4
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

scripts/kconfig/tests/err_recursive_inc/expected_stderr

-Kconfig.inc1:4: recursive inclusion detected. Inclusion path:
-  current file : 'Kconfig.inc1'
-  included from: 'Kconfig.inc3:1'
-  included from: 'Kconfig.inc2:3'
-  included from: 'Kconfig.inc1:4'
+Recursive inclusion detected.
+Inclusion path:
+  current file : Kconfig.inc1
+  included from: Kconfig.inc3:1
+  included from: Kconfig.inc2:3
+  included from: Kconfig.inc1:4

scripts/kconfig/zconf.l

@@ -328,14 +328,13 @@ void zconf_nextfile(const char *name)
 	for (iter = current_file->parent; iter; iter = iter->parent ) {
 		if (!strcmp(current_file->name,iter->name) ) {
 			fprintf(stderr,
-				"%s:%d: recursive inclusion detected. "
-				"Inclusion path:\n  current file : '%s'\n",
-				zconf_curname(), zconf_lineno(),
-				zconf_curname());
+				"Recursive inclusion detected.\n"
+				"Inclusion path:\n"
+				"  current file : %s\n", zconf_curname());
 			iter = current_file;
 			do {
 				iter = iter->parent;
-				fprintf(stderr, "  included from: '%s:%d'\n",
+				fprintf(stderr, "  included from: %s:%d\n",
 					iter->name, iter->lineno - 1);
 			} while (strcmp(iter->name, current_file->name));
 			exit(1);