layers: Enable fine-grained locking in settings and manifest
This should have been part of PR #4073
diff --git a/layers/vk_layer_settings.txt b/layers/vk_layer_settings.txt
index 131ddea..0e714f2 100644
--- a/layers/vk_layer_settings.txt
+++ b/layers/vk_layer_settings.txt
@@ -96,7 +96,6 @@
# =====================
# <LayerIdentifier>.fine_grained_locking
# Enable fine grained locking for Core Validation, which should improve
-# performance in multithreaded applications. This is an experimental feature
-# which may cause stability problems or incorrect errors to be reported.
-khronos_validation.fine_grained_locking = false
+# performance in multithreaded applications.
+khronos_validation.fine_grained_locking = true
