Remove the deprecated CONFIG_OF_FLAT_TREE

Use CONFIG_OF_LIBFDT instead to support flattened device trees.  It is
cleaner, has better functionality, and is better supported.

Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
diff --git a/README b/README
index 78344f8..5dfc9fe 100644
--- a/README
+++ b/README
@@ -350,7 +350,7 @@
 		expect it to be in bytes, others in MB.
 		Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes.
 
-		CONFIG_OF_LIBFDT / CONFIG_OF_FLAT_TREE
+		CONFIG_OF_LIBFDT
 
 		New kernel versions are expecting firmware settings to be
 		passed using flattened device trees (based on open firmware
@@ -361,13 +361,6 @@
 		 * Adds the "fdt" command
 		 * The bootm command automatically updates the fdt
 
-		CONFIG_OF_FLAT_TREE
-		 * Deprecated, see CONFIG_OF_LIBFDT
-		 * Original ft_build.c-based support
-		 * Automatically modifies the dft as part of the bootm command
-		 * The environment variable "disable_of", when set,
-		     disables this functionality.
-
 		OF_CPU - The proper name of the cpus node.
 		OF_SOC - The proper name of the soc node.
 		OF_TBCLK - The timebase frequency.