goldfish-opengl: more compat

- Define the cros_gralloc_handle when not building Android
- Define <vulkan_android.h> headers when building for Linux
  and Fuchsia.
  * Long-term, we should import the vulkan_android.h headers
    inside goldfish-opengl and not define them in
    goldfish_vk_private_defs.h

BUG=202552093
TEST=compile

Change-Id: Ie1e0aeda88bf8ce192de9a4f7a203b3c0a6df99c
3 files changed