[SPARC64]: IOMMU allocations using iommu-helper layer.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index b810f2b..4ac22f4 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -40,6 +40,10 @@
 	bool
 	default y
 
+config IOMMU_HELPER
+	bool
+	default y
+
 config QUICKLIST
 	bool
 	default y