anv: expose support for VK_KHR_sampler_mirror_clamp_to_edge

This is already supported in genX_state.c, expose the extension string.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

src/intel/vulkan/anv_device.c

@@ -260,6 +260,10 @@ static const VkExtensionProperties device_extensions[] = {
       .extensionName = VK_KHR_SWAPCHAIN_EXTENSION_NAME,
       .specVersion = 68,
    },
+   {
+      .extensionName = VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_EXTENSION_NAME,
+      .specVersion = 1,
+   }
 };
 
 static void *