Added CONFIG_ options for bd_t and env in flat dev tree

      CONFIG_OF_HAS_BD_T will put a copy of the bd_t
      into the resulting flat device tree.

      CONFIG_OF_HAS_UBOOT_ENV will copy the environment
      variables from u-boot into the flat device tree

Patch by Kumar Gala 11 Jan 2006
diff --git a/README b/README
index 6f61008..21f5bf0 100644
--- a/README
+++ b/README
@@ -413,6 +413,16 @@
 		OF_CPU - The proper name of the cpus node.
 		OF_TBCLK - The timebase frequency.
 
+		CONFIG_OF_HAS_BD_T
+
+		The resulting flat device tree will have a copy of the bd_t.
+		Space should be pre-allocated in the dts for the bd_t.
+
+		CONFIG_OF_HAS_UBOOT_ENV
+		
+		The resulting flat device tree will have a copy of u-boot's
+		environment variables
+
 - Serial Ports:
 		CFG_PL010_SERIAL