AT91: Makes AT91SAM9263-EK build correctly against u-boot-atmel/master

Rework for AT91SAM9263-EK, makes it build again.
Based on the work for AT91SAM9260-EK.

Signed-off-by: Hong Xu <hong.xu@atmel.com>
Signed-off-by: Reinhard Meyer <uboot@emk-elektronik.de>
diff --git a/boards.cfg b/boards.cfg
index f77ecfc..e501890 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -80,6 +80,11 @@
 at91sam9261ek_nandflash      arm         arm926ejs   at91sam9261ek       atmel          at91        at91sam9261ek:AT91SAM9261,SYS_USE_NANDFLASH
 at91sam9261ek_dataflash_cs0  arm         arm926ejs   at91sam9261ek       atmel          at91        at91sam9261ek:AT91SAM9261,SYS_USE_DATAFLASH_CS0
 at91sam9261ek_dataflash_cs3  arm         arm926ejs   at91sam9261ek       atmel          at91        at91sam9261ek:AT91SAM9261,SYS_USE_DATAFLASH_CS3
+at91sam9263ek_nandflash      arm         arm926ejs   at91sam9263ek       atmel          at91        at91sam9263ek:AT91SAM9263,SYS_USE_NANDFLASH
+at91sam9263ek_dataflash_cs0  arm         arm926ejs   at91sam9263ek       atmel          at91        at91sam9263ek:AT91SAM9263,SYS_USE_DATAFLASH
+at91sam9263ek_dataflash      arm         arm926ejs   at91sam9263ek       atmel          at91        at91sam9263ek:AT91SAM9263,SYS_USE_DATAFLASH
+at91sam9263ek_norflash       arm         arm926ejs   at91sam9263ek       atmel          at91        at91sam9263ek:AT91SAM9263,SYS_USE_NORFLASH
+at91sam9263ek_norflash_boot  arm         arm926ejs   at91sam9263ek       atmel          at91        at91sam9263ek:AT91SAM9263,SYS_USE_BOOT_NORFLASH
 at91sam9g10ek_nandflash      arm         arm926ejs   at91sam9261ek       atmel          at91        at91sam9261ek:AT91SAM9G10,SYS_USE_NANDFLASH
 at91sam9g10ek_dataflash_cs0  arm         arm926ejs   at91sam9261ek       atmel          at91        at91sam9261ek:AT91SAM9G10,SYS_USE_DATAFLASH_CS0
 at91sam9g10ek_dataflash_cs3  arm         arm926ejs   at91sam9261ek       atmel          at91        at91sam9261ek:AT91SAM9G10,SYS_USE_DATAFLASH_CS3