mb/amd/gardenia,padmelon/devicetree: explicitly enable IOMMU device

PCI devices that aren't present in the devicetree will be treated as
enabled. Since the chipset devicetree that will be added in a follow-up
patch disables this device by default, explicitly enable the IOMMU
device on the Stoneyridge mainboards that don't disable it to keep the
same behavior.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I4a2cdd00abe8309244829dc633dd8a9ca0038dfa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68313
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions