Update ggml layer

diff --git a/sources/ggml b/sources/ggml
index 9f1adae585616b751019ef033187ded53f36f262..c77da9af4b222f37ecf66951c2aabec988ec3403 160000 (submodule)
--- a/sources/ggml
+++ b/sources/ggml
@@ -1 +1 @@
-Subproject commit 9f1adae585616b751019ef033187ded53f36f262
+Subproject commit c77da9af4b222f37ecf66951c2aabec988ec3403