[TB] Updated waves for redundancy.

Author: Maurus Item

Makefile

@@ -25,7 +25,7 @@ QUESTA         ?= questa-2019.3-kgf
 BENDER_DIR     ?= .
 BENDER         ?= bender
 TEST_SRCS      ?= sw/redmule.c
-WAVES          ?= $(mkfile_path)/wave.do
+WAVES          ?= $(mkfile_path)/wave.tcl
 ISA            ?= riscv
 ARCH           ?= rv
 XLEN           ?= 32