gfxstream: fixes related to -Wmissing-prototypes

- the vkSetDebugMetadataAsyncGOOGLE command should
  not have an entry in the function table: it
  leads to missing prototype errors

- Make gfxstream respect cpp_msvc_compat_args, since
  it is a C++ project.  -Wmissing-prototypes will be
  made a cpp error *eventually*.

Reviewed-by: Aaron Ruby <aruby@qnx.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39418>

src/gfxstream/codegen/scripts/cereal/functable.py

@@ -162,6 +162,7 @@ NON_AUTOGEN_ENTRYPOINTS = [
     "vkQueueSubmitAsync2GOOGLE",
     "vkGetSemaphoreGOOGLE",
     "vkTraceAsyncGOOGLE",
+    "vkSetDebugMetadataAsyncGOOGLE",
 ]
 
 # Handles that need to be translated to/from their corresponding gfxstream object types

src/gfxstream/guest/meson.build

@@ -13,7 +13,7 @@ endif
 #===============#
 # Configuration #
 #===============#
-gfxstream_guest_args = ['-D_FILE_OFFSET_BITS=64']
+gfxstream_guest_args = cpp_msvc_compat_args + ['-D_FILE_OFFSET_BITS=64']
 
 # Our internal guest build
 if host_machine.system() == 'windows'