kconfig: remove P_SYMBOL property

P_SYMBOL is a pseudo property that was previously used for data linking
purposes.

It is no longer used except for debug prints. Remove it.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/kconfig/expr.h

@@ -168,7 +168,6 @@ enum prop_type {
 	P_SELECT,   /* select BAR */
 	P_IMPLY,    /* imply BAR */
 	P_RANGE,    /* range 7..100 (for a symbol) */
-	P_SYMBOL,   /* where a symbol is defined */
 };
 
 struct property {

scripts/kconfig/parser.y

@@ -707,10 +707,6 @@ static void print_symbol(FILE *out, const struct menu *menu)
 			print_quoted_string(out, prop->text);
 			fputc('\n', out);
 			break;
-		case P_SYMBOL:
-			fputs( "  symbol ", out);
-			fprintf(out, "%s\n", prop->menu->sym->name);
-			break;
 		default:
 			fprintf(out, "  unknown prop %d!\n", prop->type);
 			break;

scripts/kconfig/qconf.cc

@@ -1094,7 +1094,6 @@ QString ConfigInfoView::debug_info(struct symbol *sym)
 		case P_RANGE:
 		case P_COMMENT:
 		case P_IMPLY:
-		case P_SYMBOL:
 			stream << prop_get_type_name(prop->type);
 			stream << ": ";
 			expr_print(prop->expr, expr_print_help,

scripts/kconfig/symbol.c

@@ -1321,8 +1321,6 @@ const char *prop_get_type_name(enum prop_type type)
 		return "imply";
 	case P_RANGE:
 		return "range";
-	case P_SYMBOL:
-		return "symbol";
 	case P_UNKNOWN:
 		break;
 	}