i965: Fix PBO cache coherency issue after _mesa_meta_pbo_GetTexSubImage().
This problem can easily be reproduced with a number of ARB_shader_image_load_store piglit tests, which use a buffer object as PBO for a pixel transfer operation and later on bind the same buffer to the pipeline as shader image -- The problem is not exclusive to images though, and is likely to affect other kinds of buffer objects that can be bound to the 3D pipeline, including vertex, index, uniform, atomic counter buffers, etc. CC: 10.5 <mesa-stable@lists.freedesktop.org> Reviewed-by:Jason Ekstrand <jason.ekstrand@intel.com> Reviewed-by:
Anuj Phogat <anuj.phogat@gmail.com> (cherry picked from commit d247615e)
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