vulkan: Update header for KHR_get_surface_capabilities2

.. and new struct added to latest version of
KHR_shared_presentable_image.

Test: build
Change-Id: I653d0d8ad384c256e9a5c4cb79554360a5b2606e
diff --git a/vulkan/libvulkan/driver_gen.cpp b/vulkan/libvulkan/driver_gen.cpp
index fc3f87a..9b3695f 100644
--- a/vulkan/libvulkan/driver_gen.cpp
+++ b/vulkan/libvulkan/driver_gen.cpp
@@ -348,7 +348,7 @@
     // clang-format on
 };
 
-}  // anonymous
+}  // namespace
 
 const ProcHook* GetProcHook(const char* name) {
     const auto& begin = g_proc_hooks;