ARM: mach-k3: arm64-mmu: map 64bit FSS MMIO space in A53 MMU

Populate address mapping entries in A53 MMU for 4 GB of MMIO space
reserved for providing MMIO access to multiple flash devices through
OSPI/HBMC IPs within FSS.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
diff --git a/arch/arm/mach-k3/arm64-mmu.c b/arch/arm/mach-k3/arm64-mmu.c
index 7f908ee..b1d1d6e 100644
--- a/arch/arm/mach-k3/arm64-mmu.c
+++ b/arch/arm/mach-k3/arm64-mmu.c
@@ -50,6 +50,13 @@
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
 			 PTE_BLOCK_INNER_SHARE
 	}, {
+		.virt = 0x500000000UL,
+		.phys = 0x500000000UL,
+		.size = 0x400000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
 		/* List terminator */
 		0,
 	}