dev-amdgpu: Add checkpoint support to AMDGPUDevice

These will be needed for the second checkpoint.

Change-Id: I85ee2cbc0df130868d19376c4d98dbe4d424698e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53069
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed