arm64: a37xx: populate pcie memory region

This patch added a new region of 32MiB AT 0xe800.0000
to Armada37x0's memory map. This region is supposed to
be mapped in MMU in order to enable the access to the
PCI I/O or MEM resources.

Signed-off-by: Wilson Ding <dingwei@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/38724
Tested-by: iSoC Platform CI <ykjenk@marvell.com>
Reviewed-by: Victor Gu <xigu@marvell.com>
Signed-off-by: Ken Ma <make@marvell.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>

arch/arm/mach-mvebu/armada3700/cpu.c

@@ -46,6 +46,14 @@ static struct mm_region mvebu_mem_map[] = {
 			 PTE_BLOCK_NON_SHARE
 	},
 	{
+		/* PCI regions */
+		.phys = 0xe8000000UL,
+		.virt = 0xe8000000UL,
+		.size = 0x02000000UL,	/* 32MiB master PCI space */
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE
+	},
+	{
 		/* List terminator */
 		0,
 	}