argh overlapping commits on submodule (rebase did not work properly)

extra commit just to make sure it updates properly

diff --git a/libreriscv b/libreriscv
index 6b08375a1f5a0f3575fe86f7379506da4c4d9b90..71d70e4c753d1171c1fb83e1b9f9d78c9372f8d1 160000 (submodule)
--- a/libreriscv
+++ b/libreriscv
@@ -1 +1 @@
-Subproject commit 6b08375a1f5a0f3575fe86f7379506da4c4d9b90
+Subproject commit 71d70e4c753d1171c1fb83e1b9f9d78c9372f8d1