Add comment about JTAG ID
[ci skip]
@@ -28,7 +28,7 @@ import test_harness
DEBUG = False
CONTROL_PORT = 8541
INSTRUCTION_LENGTH = 4
-EXPECTED_IDCODE = 0x20e129f4
+EXPECTED_IDCODE = 0x20e129f4 # Matches value in hardware/core/config.sv
# JTAG instructions
INST_IDCODE = 0
