Update Jens Axboe's email in Documentation/*

Jens Axboe's old email address bounces.

Signed-off-by: Rob Landley <rob@landley.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt
index e07f253..8efe12d 100644
--- a/Documentation/DMA-mapping.txt
+++ b/Documentation/DMA-mapping.txt
@@ -782,5 +782,5 @@
 	Jay Estabrook <Jay.Estabrook@compaq.com>
 	Thomas Sailer <sailer@ife.ee.ethz.ch>
 	Andrea Arcangeli <andrea@suse.de>
-	Jens Axboe <axboe@suse.de>
+	Jens Axboe <jens.axboe@oracle.com>
 	David Mosberger-Tang <davidm@hpl.hp.com>