Make CPULogItem tables const

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5397 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/vl.c b/vl.c
index 122ab2f..743e613 100644
--- a/vl.c
+++ b/vl.c
@@ -8845,7 +8845,7 @@
             case QEMU_OPTION_d:
                 {
                     int mask;
-                    CPULogItem *item;
+                    const CPULogItem *item;
 
                     mask = cpu_str_to_log_mask(optarg);
                     if (!mask) {