Changelog: Add explanatory note that this file is no longer updated

Add an explanatory note to the top of Changelog pointing at the
wiki and git history for changelogs for more recent releases.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/Changelog b/Changelog
index 1c41e1441d..28a69afa0b 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,9 @@
+This file documents changes for QEMU releases 0.12 and earlier.
+For changelog information for later releases, see
+http://wiki.qemu.org/ChangeLog or look at the git history for
+more detailed information.
+
+
 version 0.12.0:
 
   - Update to SeaBIOS 0.5.0