loader: Fix enumerate device extension properties

Same as device layer property issue.
Loader needs to provide aggregate data rather
than send to instance chain.

Change-Id: Ib0e963e8d1780e4870110c556051da921f94353b
diff --git a/vulkan/libvulkan/dispatch.tmpl b/vulkan/libvulkan/dispatch.tmpl
index 204e7fb..306aae4 100644
--- a/vulkan/libvulkan/dispatch.tmpl
+++ b/vulkan/libvulkan/dispatch.tmpl
@@ -562,6 +562,7 @@
   {{else if eq $.Name "vkAllocateCommandBuffers"}}true
   {{else if eq $.Name "vkCreateDevice"}}true
   {{else if eq $.Name "vkEnumerateDeviceLayerProperties"}}true
+  {{else if eq $.Name "vkEnumerateDeviceExtensionProperties"}}true
 
   {{/* vkDestroy for dispatchable objects needs to handle VK_NULL_HANDLE;
        trying to dispatch through that would crash. */}}