iommu/rockchip: Silence attaching and detaching of devices
Currently the driver emits a log line every time a device attaches or detaches - which happens at every unblank/blank of the drm for example. The message itself also has no real value to the average user and is merely useful when debugging a problem, so make it a dev_dbg instead. Signed-off-by: NHeiko Stuebner <heiko@sntech.de> Signed-off-by: NJoerg Roedel <jroedel@suse.de>
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