arm64: implement generic IOMMU configuration

Add the necessary call to of_iommu_init.

Acked-by: Will Deacon <[e-mail]>
Signed-off-by: Robin Murphy <[e-mail]>
Signed-off-by: Catalin Marinas <[e-mail]>

arch/arm64/kernel/setup.c

···
 #include <linux/fs.h>
 #include <linux/proc_fs.h>
 #include <linux/memblock.h>
+#include <linux/of_iommu.h>
 #include <linux/of_fdt.h>
 #include <linux/of_platform.h>
 #include <linux/efi.h>
···
 
 static int __init arm64_device_init(void)
 {
+	of_iommu_init();
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 	return 0;
 }