global: Migrate CONFIG_I2C_MVTWSI_BASE0 to CFG

Perform a simple rename of CONFIG_I2C_MVTWSI_BASE0 to CFG_I2C_MVTWSI_BASE0

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/db-88f6720.h b/include/configs/db-88f6720.h
index ef9c457..54de2d0 100644
--- a/include/configs/db-88f6720.h
+++ b/include/configs/db-88f6720.h
@@ -17,7 +17,7 @@
  */
 
 /* I2C */
-#define CONFIG_I2C_MVTWSI_BASE0		MVEBU_TWSI_BASE
+#define CFG_I2C_MVTWSI_BASE0		MVEBU_TWSI_BASE
 
 /* USB/EHCI configuration */