Updates kvmx: 3571ea4 Fix: support for newer kvm and screen such as those from debian...

diff --git a/kvmx b/kvmx
index 521838ecfee5095770214a2246c0c95307215bd1..3571ea4a5f71afbcdcd915f2a84a6622e3cb56be 160000 (submodule)
--- a/kvmx
+++ b/kvmx
@@ -1 +1 @@
-Subproject commit 521838ecfee5095770214a2246c0c95307215bd1
+Subproject commit 3571ea4a5f71afbcdcd915f2a84a6622e3cb56be