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anv: increase maxResourceDescriptorBufferRange on DG2+

Lionel Landwerlin requested to merge llandwerlin/mesa:review/anv-desc-buffer-max-resource-range-bump into main

What does this MR do and why?

anv: increase maxResourceDescriptorBufferRange on DG2+

The current helper anv_physical_device_bindless_heap_size()
artificially limited the surface heap size on DG2+ to 128MB. The HW is
actually 4GB capable, but we have workaround requiring to overlap the
dynamic state heap with the bindless surface state heap.

The actual limit comes from our virtual address space setup. It is
different between descriptor buffers and regular descriptors.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: fe037dec6e ("anv: expose VK_EXT_descriptor_buffer")

/cc @ibriano

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