AT91SAM9263EK support

This patch adds support for the AT91SAM9263 chip and the AT91SAM9263EK
board.

Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/atmel/at91sam9263ek/config.mk b/board/atmel/at91sam9263ek/config.mk
new file mode 100644
index 0000000..ff2cfd1
--- /dev/null
+++ b/board/atmel/at91sam9263ek/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0x23f00000