dzn: Add a dummy GetDeviceGroupPeerMemoryFeatures()

We don't support device groups, but Vulkan 1.1 requires a
GetDeviceGroupPeerMemoryFeatures() implementation, so let's just
advertise no peer-memory features.

Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16926>

src/microsoft/vulkan/dzn_device.c

@@ -2803,3 +2803,13 @@ dzn_DestroySampler(VkDevice device,
 {
    dzn_sampler_destroy(dzn_sampler_from_handle(sampler), pAllocator);
 }
+
+VKAPI_ATTR void VKAPI_CALL
+dzn_GetDeviceGroupPeerMemoryFeatures(VkDevice device,
+                                     uint32_t heapIndex,
+                                     uint32_t localDeviceIndex,
+                                     uint32_t remoteDeviceIndex,
+                                     VkPeerMemoryFeatureFlags *pPeerMemoryFeatures)
+{
+   *pPeerMemoryFeatures = 0;
+}