rockchip: rk3328: correct mem_region

According to rk3328 TRM:
0~0xff000000 is ddr space;
0xff000000~0xffffffff is device space.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/mach-rockchip/rk3328/rk3328.c

@@ -13,13 +13,13 @@ static struct mm_region rk3328_mem_map[] = {
 	{
 		.virt = 0x0UL,
 		.phys = 0x0UL,
-		.size = 0x80000000UL,
+		.size = 0xff000000UL,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
 			 PTE_BLOCK_INNER_SHARE
 	}, {
-		.virt = 0xf0000000UL,
-		.phys = 0xf0000000UL,
-		.size = 0x10000000UL,
+		.virt = 0xff000000UL,
+		.phys = 0xff000000UL,
+		.size = 0x1000000UL,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
 			 PTE_BLOCK_NON_SHARE |
 			 PTE_BLOCK_PXN | PTE_BLOCK_UXN