iommu: tegra: enable compile testing

There seems to be nothing preventing this driver from being compile
tested so enable that to increase build coverage.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

Author: jhovold

drivers/iommu/Kconfig

@@ -247,7 +247,7 @@ config SUN50I_IOMMU
 
 config TEGRA_IOMMU_SMMU
 	bool "NVIDIA Tegra SMMU Support"
-	depends on ARCH_TEGRA
+	depends on ARCH_TEGRA || COMPILE_TEST
 	depends on TEGRA_AHB
 	depends on TEGRA_MC
 	select IOMMU_API