at91sam9263ek: add nor flash support

this will allow you to store use it for the env and to boot directly U-Boot from

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/doc/README.at91 b/doc/README.at91
index 9b4eae6..4a2c56b 100644
--- a/doc/README.at91
+++ b/doc/README.at91
@@ -62,11 +62,16 @@
 	U-Boot environment variables can be stored at different places:
 		- Dataflash on SPI chip select 0 (dataflash card)
 		- Nand flash.
+		- Nor falsh (not populate by default)
 
 	You can choose your storage location at config step (here for at91sam9260ek) :
 		make at91sam9263ek_config		- use data flash (spi cs0) (default)
 		make at91sam9263ek_nandflash_config	- use nand flash
 		make at91sam9263ek_dataflash_cs0_config	- use data flash (spi cs0)
+		make at91sam9263ek_norflash_config	- use nor falsh
+
+	You can choose to boot directly from U-Boot at config step
+		make at91sam9263ek_norflash_boot_config	- boot from nor falsh
 
 
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