armv8: mmu: Add support of non-identical mapping

Introduce virtual and physical addresses in the mapping table. This change
have no impact on existing boards because they all use idential mapping.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/mach-uniphier/arm64/mem_map.c b/arch/arm/mach-uniphier/arm64/mem_map.c
index 74ef919..67bc4f1 100644
--- a/arch/arm/mach-uniphier/arm64/mem_map.c
+++ b/arch/arm/mach-uniphier/arm64/mem_map.c
@@ -10,14 +10,16 @@
 
 static struct mm_region uniphier_mem_map[] = {
 	{
-		.base = 0x00000000,
+		.virt = 0x00000000,
+		.phys = 0x00000000,
 		.size = 0x80000000,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
 			 PTE_BLOCK_NON_SHARE |
 			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
 	},
 	{
-		.base = 0x80000000,
+		.virt = 0x80000000,
+		.phys = 0x80000000,
 		.size = 0xc0000000,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
 			 PTE_BLOCK_INNER_SHARE