Revert "kconfig: Temporarily disable dependency warnings"

This reverts commit 71ebc01d, which was a 2.6.36-only stopgap solution.
Signed-off-by: NMichal Marek <mmarek@suse.cz>

scripts/kconfig/symbol.c

@@ -350,7 +350,6 @@ void sym_calc_value(struct symbol *sym)
 				}
 			}
 		calc_newval:
-#if 0
 			if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {
 				fprintf(stderr, "warning: (");
 				expr_fprint(sym->rev_dep.expr, stderr);
@@ -359,7 +358,6 @@ void sym_calc_value(struct symbol *sym)
 				expr_fprint(sym->dir_dep.expr, stderr);
 				fprintf(stderr, ")\n");
 			}
-#endif
 			newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
 		}
 		if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)