I2C: add i2c support for Armada100 platform

Add i2c support to aspenite board with Armada100 soc.

Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Lei Wen <leiwen@marvell.com>
diff --git a/include/configs/aspenite.h b/include/configs/aspenite.h
index fd35f3e..1619db5 100644
--- a/include/configs/aspenite.h
+++ b/include/configs/aspenite.h
@@ -52,6 +52,7 @@
  */
 #define CONFIG_SYS_NO_FLASH		/* Declare no flash (NOR/SPI) */
 #include <config_cmd_default.h>
+#define CONFIG_CMD_I2C
 #define CONFIG_CMD_AUTOSCRIPT
 #undef CONFIG_CMD_NET
 #undef CONFIG_CMD_NFS