iommu/amd: Fix compilation error

With WERROR=y, which is default, clang is not happy:

.../amd/pasid.c:168:3: error: call to undeclared function 'mmu_notifier_unregister'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
.../amd/pasid.c:191:8: error: call to undeclared function 'mmu_notifier_register'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2 errors generated.

Select missed dependency.

Fixes: a5a91e5 ("iommu/amd: Add SVA domain support")
Signed-off-by: Andy Shevchenko <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>

Author: andy-shev

drivers/iommu/amd/Kconfig

@@ -7,6 +7,7 @@ config AMD_IOMMU
 	select PCI_ATS
 	select PCI_PRI
 	select PCI_PASID
+	select MMU_NOTIFIER
 	select IOMMU_API
 	select IOMMU_IOVA
 	select IOMMU_IO_PGTABLE