add mpw-3-a branch to sudoku_accelerator, update subrepo

verilog/rtl/sudoku_accelerator

diff --git a/verilog/rtl/sudoku_accelerator b/verilog/rtl/sudoku_accelerator
index 2742b36..f8980c9 160000
--- a/verilog/rtl/sudoku_accelerator
+++ b/verilog/rtl/sudoku_accelerator
@@ -1 +1 @@
-Subproject commit 2742b36d143013a626fe8b16ade96d3611671b79
+Subproject commit f8980c958673515068cc96f33798d3e58421b33e