Improve for arm64

diff --git a/sources/ggml b/sources/ggml
index 3798f56aeed7eab275012be425e8ffbb79eb45e2..3b6b0ca87746e705eafb6feb98cc6e83e63e490a 160000 (submodule)
--- a/sources/ggml
+++ b/sources/ggml
@@ -1 +1 @@
-Subproject commit 3798f56aeed7eab275012be425e8ffbb79eb45e2
+Subproject commit 3b6b0ca87746e705eafb6feb98cc6e83e63e490a