iommu/amd: Clarify AMD IOMMUv2 initialization messages

commit 717e88aa

 upstream.

The messages printed on the initialization of the AMD IOMMUv2 driver
have caused some confusion in the past. Clarify the messages to lower
the confusion in the future.

Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20211123105507.7654-3-joro@8bytes.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>