ext_image_dma_buf_import: Add a modifier test which uses the GPU

Nanley Chery requested to merge nchery/piglit:dmabuf-files into main

Add a test which exercises a wide range of code-paths for imported dmabufs in the iris driver. It has:

It has support for loading dmabufs from binaries, but the binaries and the function implementation needed to enable this are not included. For an example of how to use this feature, see this branch.

Edited by Nanley Chery

Merge request reports