anv: Add EXT_direct_mode_display to anv driver [v2]

Add support for the EXT_direct_mode_display extension. This just
provides the vkReleaseDisplayEXT function.

v2: Add extension to list in alphabetical order

    Suggested-by:  Jason Ekstrand <jason@jlekstrand.net>

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/vulkan/anv_extensions.py

@@ -111,6 +111,7 @@ EXTENSIONS = [
     Extension('VK_KHR_multiview',                         1, True),
     Extension('VK_KHR_display',                          23, 'VK_USE_PLATFORM_DISPLAY_KHR'),
     Extension('VK_EXT_debug_report',                      8, True),
+    Extension('VK_EXT_direct_mode_display',               1, 'VK_USE_PLATFORM_DISPLAY_KHR'),
     Extension('VK_EXT_external_memory_dma_buf',           1, True),
     Extension('VK_EXT_global_priority',                   1,
               'device->has_context_priority'),

src/intel/vulkan/anv_wsi_display.c

@@ -133,3 +133,14 @@ anv_CreateDisplayPlaneSurfaceKHR(
 
    return wsi_create_display_surface(_instance, alloc, create_info, surface);
 }
+
+VkResult
+anv_ReleaseDisplayEXT(VkPhysicalDevice physical_device,
+                       VkDisplayKHR     display)
+{
+   ANV_FROM_HANDLE(anv_physical_device, pdevice, physical_device);
+
+   return wsi_release_display(physical_device,
+                              &pdevice->wsi_device,
+                              display);
+}