i2c, ppc4xx_i2c: switch to new multibus/multiadapter support

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Cc: Heiko Schocher <hs@denx.de>
Cc: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/icon.h b/include/configs/icon.h
index c2da4ce..ba43355 100644
--- a/include/configs/icon.h
+++ b/include/configs/icon.h
@@ -120,9 +120,8 @@
 /*
  * I2C
  */
-#define CONFIG_SYS_I2C_SPEED	100000	/* I2C speed and slave address	*/
+#define CONFIG_SYS_I2C_PPC4XX_SPEED_0	100000
 
-#define CONFIG_I2C_MULTI_BUS
 #define CONFIG_SYS_SPD_BUS_NUM	0	/* The I2C bus for SPD		*/
 
 #define CONFIG_SYS_I2C_MULTI_EEPROMS