ARM64: zynqmp: Make DDR detection code work on 32bit system

Define u64 types to be usable on 32bit system because of 64bit address
and size cells and 32bit shifts in the code.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

board/xilinx/zynqmp/zynqmp.c

@@ -63,8 +63,8 @@ static phys_size_t fdt_get_reg(const void *fdt, int nodeoffset, void *buf,
 	int address_cells = fdt_address_cells(fdt, parent_offset);
 	int size_cells = fdt_size_cells(fdt, parent_offset);
 	char *p = buf;
-	phys_addr_t val;
-	phys_size_t vals;
+	u64 val;
+	u64 vals;
 
 	debug("%s: addr_cells=%x, size_cell=%x, buf=%p, cell=%p\n",
 	      __func__, address_cells, size_cells, buf, cell);
@@ -166,7 +166,7 @@ int dram_init(void)
 
 	gd->ram_size = fdt_get_reg(blob, node, &tmp, cell, len / FDT_REG_SIZE);
 
-	debug("%s: Initial DRAM size %llx\n", __func__, gd->ram_size);
+	debug("%s: Initial DRAM size %llx\n", __func__, (u64)gd->ram_size);
 
 	return 0;
 }