Rename avfutil to avflog

.. so that it won't become a dump ground.

Bug: 295168844
Test: build
Change-Id: I7e583211ac9d2db0d56fdfa0092c91a123f138ea
diff --git a/virtualizationservice/Android.bp b/virtualizationservice/Android.bp
index 0fc1a2d..67890e2 100644
--- a/virtualizationservice/Android.bp
+++ b/virtualizationservice/Android.bp
@@ -27,7 +27,7 @@
         "android.os.permissions_aidl-rust",
         "libandroid_logger",
         "libanyhow",
-        "libavfutil",
+        "libavflog",
         "libbinder_rs",
         "liblibc",
         "liblog_rust",