iommu/arm-smmu: fix compilation issue when !CONFIG_ARM_AMBA

If !CONFIG_ARM_AMBA, we shouldn't try to register ourselves with the
amba_bustype.

Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2014-02-04 22:17:53 +00:00
commit d123cf82d3