iommu/tegra241-cmdqv: Decouple driver from ACPI

iommu/tegra241-cmdqv: Decouple driver from ACPI

A platform device is created by acpi_create_platform_device() per CMDQV's
adev. That means there is no point in going through _CRS of ACPI.

Replace all the ACPI functions with standard platform functions. And drop
all ACPI dependencies. This will make the driver compatible with DT also.

Suggested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Will Deacon <will@kernel.org>