pvr: Use the render passes' attachments array to setup ISP state

pvr_setup_isp_faces_and_control() can be called from a secondary command buffer. The render pass info's attachments array is only populated in the primary command buffer on which the render pass was started, thus the ds_aspect being used always ended up being 0 leading to incorrect ISP state being setup.

dEQP tests fixed:
    .{1.13, 1.65, 1.74, 3.219, 3.236, 3.314, 3.385, 4.426}

Signed-off-by: Karmjit Mahil Karmjit.Mahil@imgtec.com

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