iommu/mediatek: Backup/restore regsiters for multi banks
Each bank has some independent registers. thus backup/restore them for each a bank when suspend and resume. Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/20220503071427.2285-35-yong.wu@mediatek.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
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