arm64: dts: zynqmp: Fix pcie ranges description

DT schema is checking tuples which should be properly separated. The patch
is doing this separation to avoid the following warning:
..yaml: axi: pcie@fd0e0000:ranges: [[33554432, 0, 3758096384, 0,
3758096384, 0, 268435456, 1124073472, 6, 0, 6, 0, 2, 0]] is not valid under
any of the given schemas (Possible causes of the failure):
...dt.yaml: axi: pcie@fd0e0000:ranges: True was expected
...dt.yaml: axi: pcie@fd0e0000:ranges:0: [33554432, 0, 3758096384, 0,
3758096384, 0, 268435456, 1124073472, 6, 0, 6, 0, 2, 0] is too long

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/f59a63d8cb941592de6d2dee8afa6f120b2e40c8.1601379794.git.michal.simek@xilinx.com