Update mailing list email and archive addresses

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

MAINTAINERS

@@ -4,7 +4,7 @@
 #									#
 # For any board without permanent maintainer, please contact		#
 #	Wolfgang Denk <wd@denx.de>					#
-# and Cc: the <U-Boot-Users@lists.sourceforge.net> mailing lists.	#
+# and Cc: the <u-boot@lists.denx.de> mailing list.			#
 #									#
 # Note: lists sorted by Maintainer Name					#
 #########################################################################

README

@@ -60,10 +60,10 @@ Where to get help:
 
 In case you have questions about, problems with or contributions for
 U-Boot you should send a message to the U-Boot mailing list at
-<u-boot-users@lists.sourceforge.net>. There is also an archive of
-previous traffic on the mailing list - please search the archive
-before asking FAQ's. Please see
-http://lists.sourceforge.net/lists/listinfo/u-boot-users/
+<u-boot@lists.denx.de>. There is also an archive of previous traffic
+on the mailing list - please search the archive before asking FAQ's.
+Please see http://lists.denx.de/pipermail/u-boot and
+http://dir.gmane.org/gmane.comp.boot-loaders.u-boot
 
 
 Where to get source code: