docs/features.txt: mark VK_ANDROID_native_buffer as supported on turnip

Fixes: 5789505ab3b62e40fb30 ("turnip: Make Android platform build")
Signed-off-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17767>
1 file changed