Updates kvmx: bfcbe75 Overwrite fingerprint files instead of appending at kvmx-create

diff --git a/kvmx b/kvmx
index cd2f289ea85183786601c1eef6ff7e1cc2f9a8e2..bfcbe75b84f8a58e607c67eaf8d3d3270237f748 160000 (submodule)
--- a/kvmx
+++ b/kvmx
@@ -1 +1 @@
-Subproject commit cd2f289ea85183786601c1eef6ff7e1cc2f9a8e2
+Subproject commit bfcbe75b84f8a58e607c67eaf8d3d3270237f748