dmaengine: idxd: depends on !UML

Now that UML has PCI support, this driver must depend also on
!UML since it pokes at X86_64 architecture internals that don't
exist on ARCH=um.
Reported-by: Nkernel test robot <lkp@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Acked-by: NDave Jiang <dave.jiang@intel.com>
Acked-By: NAnton Ivanov <anton.ivanov@cambridgegreys.com>
Link: https://lore.kernel.org/r/20210625103810.fe877ae0aef4.If240438e3f50ae226f3f755fc46ea498c6858393@changeidSigned-off-by: NVinod Koul <vkoul@kernel.org>

drivers/dma/Kconfig

@@ -279,7 +279,7 @@ config INTEL_IDMA64
 
 config INTEL_IDXD
 	tristate "Intel Data Accelerators support"
-	depends on PCI && X86_64
+	depends on PCI && X86_64 && !UML
 	depends on PCI_MSI
 	depends on SBITMAP
 	select DMA_ENGINE