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/neo.h b/include/configs/neo.h
index 38b5bec..be1c9ff 100644
--- a/include/configs/neo.h
+++ b/include/configs/neo.h
@@ -117,7 +117,7 @@
 /*
  * I2C stuff
  */
-#define CONFIG_SYS_I2C_SPEED		100000	/* I2C speed and slave address	*/
+#define CONFIG_SYS_I2C_PPC4XX_SPEED_0		100000
 
 /* RTC */
 #define CONFIG_RTC_DS1337