drm/amdgpu: Enable compilation under UML
The User-Mode Linux configuration is used by KUnit to execute kernel results directly. This removes the need for a test machine or a virtual machine. Therefore, as KUnit tests are being added to AMDGPU, it is interesting to enable compilation under UML, as it eases running the tests on CI and developers' machines.
Also, the use of UML is encouraged by the KUnit team [1], as it is considered a better practice to write tests that run on UML to tests that only run under a particular architecture.
[1] https://docs.kernel.org/dev-tools/kunit/usage.html#writing-tests-for-other-architectures
Signed-off-by: Maíra Canal mairacanal@riseup.net
Para rodar, necessita de mais um patch relacionado a GCC12:
prerequisite-patch-id: c3397dfef28acd032058b79323c768193baff982