sun.com documentation fixes

After I came across a help text for SUNGEM mentioning a broken sun.com
URL, I felt like fixing those up, as they are now pointing to oracle.com
URLs.

Signed-off-by: Christian Kujau <lists@nerdbynature.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/Documentation/devicetree/booting-without-of.txt b/Documentation/devicetree/booting-without-of.txt
index d4d6675..b2fb2f5 100644
--- a/Documentation/devicetree/booting-without-of.txt
+++ b/Documentation/devicetree/booting-without-of.txt
@@ -1228,7 +1228,7 @@
 The interrupt tree model is fully described in the
 document "Open Firmware Recommended Practice: Interrupt
 Mapping Version 0.9".  The document is available at:
-<http://playground.sun.com/1275/practice>.
+<http://www.openfirmware.org/ofwg/practice/>
 
 1) interrupts property
 ----------------------