CONFIG_TARGET_XXX is wrong

Signed-off-by: Zachary Amsden <address@hidden>

diff --git a/vl.c b/vl.c
index 6e35cc6..9720619 100644
--- a/vl.c
+++ b/vl.c
@@ -1565,7 +1565,7 @@ static void configure_rtc(QemuOpts *opts)
             exit(1);
         }
     }
-#ifdef CONFIG_TARGET_I386
+#ifdef TARGET_I386
     value = qemu_opt_get(opts, "driftfix");
     if (value) {
         if (!strcmp(buf, "slew")) {