[dv/prim] add basic PRINCE testbench

Signed-off-by: Udi Jonnalagadda <udij@google.com>
diff --git a/util/licence-checker.hjson b/util/licence-checker.hjson
index f800022..3ad1d9a 100644
--- a/util/licence-checker.hjson
+++ b/util/licence-checker.hjson
@@ -21,6 +21,8 @@
     'hw/dv/dpi/usbdpi/usb_crc.c',
     # Vendored HMAC model
     'hw/ip/hmac/dv/cryptoc_dpi/*',
+    # PRINCE C++ reference model from Sebastien Riou
+    'hw/ip/prim/dv/prim_prince/crypto_dpi_prince/prince_ref.h',
     # Vendored FPGA information
     'hw/top_earlgrey/data/*.xdc',
     'util/fpga/bram_load.mmi',