at91rm9200ek: convert to at91

This patch removes some functionality from at91rm9200ek board but the
remaining functionality does now work with newer at91 code and
arm-relocation.

Currently missing features are:
 - dataflash booting (due to missing HW for testing)
 - MMC/SD-Card
 - first stage bootloader support is completely removed (not needed for
   NOR)

Cause this board was (some days ago) reference for all at91rm9200 based
boards this should be a good starting point to convert all remaining
at91rm9200 borads to at91 code. Aside from that this is a good base to
get some drivers between at91sam/at91rm/avr32 merged.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
diff --git a/boards.cfg b/boards.cfg
index 3a965e9..62c5075 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -344,7 +344,7 @@
 lpc2292sodimm	arm	arm720t		-		-		lpc2292
 eb_cpux9k2	arm	arm920t		-		BuS		at91
 at91rm9200dk	arm	arm920t		-		atmel		at91rm9200
-at91rm9200ek	arm	arm920t		-		atmel		at91rm9200
+at91rm9200ek	arm	arm920t		-		atmel		at91
 sbc2410x	arm	arm920t		-		-		s3c24x0
 smdk2400	arm	arm920t		-		samsung		s3c24x0
 smdk2410	arm	arm920t		-		samsung		s3c24x0