[POWERPC] Make it blatantly clear; mpc5200 device tree is not yet stable

Documentation-only change.  The 5200 device tree layout has not yet
stablized, so nobody should depend on the layout of the tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

Documentation/powerpc/mpc52xx-device-tree-bindings.txt

@@ -4,6 +4,12 @@ MPC52xx Device Tree Bindings
 (c) 2006 Secret Lab Technologies Ltd
 Grant Likely <grant.likely at secretlab.ca>
 
+********** DRAFT ***********
+* WARNING: Do not depend on the stability of these bindings just yet.
+* The MPC5200 device tree conventions are still in flux
+* Keep an eye on the linuxppc-dev mailing list for more details
+********** DRAFT ***********
+
 I - Introduction
 ================
 Boards supported by the arch/powerpc architecture require device tree be

arch/powerpc/boot/dts/lite5200.dts

@@ -10,6 +10,12 @@
  * option) any later version.
  */
 
+/*
+ * WARNING: Do not depend on this tree layout remaining static just yet.
+ * The MPC5200 device tree conventions are still in flux
+ * Keep an eye on the linuxppc-dev mailing list for more details
+ */
+
 / {
 	model = "Lite5200";
 	compatible = "lite5200\0lite52xx\0mpc5200\0mpc52xx";

arch/powerpc/boot/dts/lite5200b.dts

@@ -10,6 +10,12 @@
  * option) any later version.
  */
 
+/*
+ * WARNING: Do not depend on this tree layout remaining static just yet.
+ * The MPC5200 device tree conventions are still in flux
+ * Keep an eye on the linuxppc-dev mailing list for more details
+ */
+
 / {
 	model = "Lite5200b";
 	compatible = "lite5200b\0lite52xx\0mpc5200b\0mpc52xx";