[U-Boot] [PATCH] README: Device Tree: Add & explain undocumented options.

[Ahmed Samir Khalil]

There are no info about these options in the README.
Documenting these options makes getting startup,
configuration & testing easier.

Signed-off-by: Ahmed Samir Khalil <engkhalil86 at gmail.com>
---
 README | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/README b/README
index 1d0b946..1c9f778 100644
--- a/README
+++ b/README
@@ -1154,6 +1154,14 @@ The following options need to be configured:
 		still use the individual files if you need something more
 		exotic.
 
+		CONFIG_OF_HOSTFILE
+		If this variable is defined, U-Boot will read the device tree
+		from a file on startup. This is only useful for sandbox. You
+		may use either CONFIG_OF_HOSTFILE or CONFIG_OF_CONTROL.
+
+		CONFIG_OF_SPI_FLASH
+		Define to enable setting up a new SPI flash (slave) from an fdt node.
+
 - Watchdog:
 		CONFIG_WATCHDOG
 		If this variable is defined, it enables watchdog
-- 
2.7.4