BACKPORT: FROMLIST: iommu/arm-smmu-v3-kvm: Probe power domains

Try to use SCMI if possible, otherwise rely on HVC to the hypervisor
to notify about power changes, this is ONLY safe if the SMMU resets
to blocking DMA.

Link: https://lore.kernel.org/all/20241212180423.1578358-54-smostafa@google.com/



Bug: 357781595
Bug: 384432312

Change-Id: Ie0cf4a53052514849b06b60235c520da966026a9
Signed-off-by: Mostafa Saleh <smostafa@google.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>