arm: imx: add tzic interrupt controller for imx53

arm: imx: add tzic interrupt controller for imx53

Since commit 999a78d5cf00 ("scripts/dtc: Update to upstream version v1.4.5-3-gb1a60033c110")
dtc warns about:
arch/arm/dts/imx53-cx9020.dtb: Warning (interrupts_property): Missing interrupt-parent for /soc/aips@50000000/serial@53fc0000
arch/arm/dts/imx53-cx9020.dtb: Warning (interrupts_property): Missing interrupt-parent for /soc/aips@50000000/ccm@53fd4000
arch/arm/dts/imx53-cx9020.dtb: Warning (interrupts_property): Missing interrupt-parent for /soc/aips@50000000/gpio@53fe4000
arch/arm/dts/imx53-cx9020.dtb: Warning (interrupts_property): Missing interrupt-parent for /soc/aips@60000000/sdma@63fb0000
arch/arm/dts/imx53-cx9020.dtb: Warning (interrupts_property): Missing interrupt-parent for /soc/aips@60000000/ethernet@63fec000

Fix this by adding a node for the tzic interrupt controller.
Copied from "<Linux>/arch/arm/boot/dts/imx53.dts"

Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>