libvulkan: Add VK_ANDROID_external_memory_android_hardware_buffer

Test: build
Change-Id: Ice6ec464e91aaf42d56afaf9b11fb514076f64e9
diff --git a/vulkan/libvulkan/driver_gen.h b/vulkan/libvulkan/driver_gen.h
index 646662f..99dc889 100644
--- a/vulkan/libvulkan/driver_gen.h
+++ b/vulkan/libvulkan/driver_gen.h
@@ -45,6 +45,7 @@
         KHR_swapchain,
         KHR_get_surface_capabilities2,
         KHR_get_physical_device_properties2,
+        ANDROID_external_memory_android_hardware_buffer,
 
         EXTENSION_CORE,  // valid bit
         EXTENSION_COUNT,