arm: exynos: Map iRAM APM area for Exynos850 SoC

This iRAM APM area is needed for I3C access to PMIC via APM block.
Without this mapping any access to APM iRAM leads to "Synchronous Abort"
exception.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

arch/arm/mach-exynos/mmu-arm64.c

@@ -101,6 +101,14 @@ struct mm_region *mem_map = exynos7880_mem_map;
 
 static struct mm_region exynos850_mem_map[] = {
 	{
+		/* iRAM */
+		.virt = 0x02000000UL,
+		.phys = 0x02000000UL,
+		.size = SZ_2M,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
 		/* Peripheral block */
 		.virt = 0x10000000UL,
 		.phys = 0x10000000UL,