New topology ripped from Fiji to support dGPU. A dGPU flag is added to
the config which is propogated to the driver. The emulated driver is
now able to properly deal with dGPU ioctls and mmaps. For now, dGPU
physical memory is allocated from the host, but this is easy to change
once we get a GPU memory controller up and running.
Change-Id: I594418482b12ec8fb2e4018d8d0371d56f4f51c8
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/42214
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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