blackfin: rename bfin-twi_i2c driver to adi_i2c

Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
diff --git a/include/configs/bf518f-ezbrd.h b/include/configs/bf518f-ezbrd.h
index 20f6ed1..4df51b9 100644
--- a/include/configs/bf518f-ezbrd.h
+++ b/include/configs/bf518f-ezbrd.h
@@ -134,7 +134,7 @@
 /*
  * I2C Settings
  */
-#define CONFIG_BFIN_TWI_I2C	1
+#define CONFIG_SYS_I2C_ADI
 #define CONFIG_HARD_I2C		1