blackfin: rename bfin-twi_i2c driver to adi_i2c

Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
diff --git a/include/configs/bf537-srv1.h b/include/configs/bf537-srv1.h
index 0b723cf..a6ceffa 100644
--- a/include/configs/bf537-srv1.h
+++ b/include/configs/bf537-srv1.h
@@ -120,7 +120,7 @@
 /*
  * I2C settings
  */
-#define CONFIG_BFIN_TWI_I2C	1
+#define CONFIG_SYS_I2C_ADI
 #define CONFIG_HARD_I2C		1
 #define CONFIG_SYS_I2C_SPEED		50000
 #define CONFIG_SYS_I2C_SLAVE		0