ppc4xx: Fix "chip_config" command for AMCC Arches

This patch fixes the "chip_config" command for I2C bootstrap EEPROM
configuration. First it changes the I2C bootstrap EEPROM address to
0x54 as this is used on Arches (instead of 0x52 on Canyonlands/
Glacier). Additionally, the NAND bootstrap settings are removed
for Arches since Arches doesn't support NAND-booting.

Signed-off-by: Stefan Roese <sr@denx.de>

include/configs/canyonlands.h

diff --git a/include/configs/canyonlands.h b/include/configs/canyonlands.h
index 217a8ee..3dddccf 100644
--- a/include/configs/canyonlands.h
+++ b/include/configs/canyonlands.h
@@ -331,7 +331,11 @@
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS	10
 
 /* I2C bootstrap EEPROM */
+#if defined(CONFIG_ARCHES)
+#define CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR	0x54
+#else
 #define CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR	0x52
+#endif
 #define CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET	0
 #define CONFIG_4xx_CONFIG_BLOCKSIZE		16