ARM: dts: rockchip: Remove useless interrupt-names on IOMMU node on rk3036

Remove useless interrupt-names property for IOMMU node

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Link: https://lore.kernel.org/r/20210507090232.233049-5-benjamin.gaignard@collabora.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>