Certain AOSP targets feature a glibc or musl-based build,
where (__ANDROID__) isn't defined, but:
- ANDROID is defined
- the relevant headers are present.
For such builds, buffer_handle_t shouldn't be defined
internally.
Reviewed-by: Roman Stratiienko <r.stratiienko@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31030>