Added note: WISHBONE interface replaced by Tilelink2

src/main/scala/devices/i2c/I2C.scala

@@ -37,6 +37,7 @@
 
 // This code was re-written in Chisel by SiFive, Inc.
 // See LICENSE for license details.
+// WISHBONE interface replaced by Tilelink2
 
 package sifive.blocks.devices.i2c