arm64: dts: rockchip: Remove useless interrupt-names properties from px30 IOMMU nodes

Remove useless interrupt-names properties for IOMMU nodes
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Link: https://lore.kernel.org/r/20210507090232.233049-6-benjamin.gaignard@collabora.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/px30.dtsi

@@ -1087,7 +1087,6 @@ vopb_mmu: iommu@ff460f00 {
 		compatible = "rockchip,iommu";
 		reg = <0x0 0xff460f00 0x0 0x100>;
 		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
-		interrupt-names = "vopb_mmu";
 		clocks = <&cru ACLK_VOPB>, <&cru HCLK_VOPB>;
 		clock-names = "aclk", "iface";
 		power-domains = <&power PX30_PD_VO>;
@@ -1128,7 +1127,6 @@ vopl_mmu: iommu@ff470f00 {
 		compatible = "rockchip,iommu";
 		reg = <0x0 0xff470f00 0x0 0x100>;
 		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
-		interrupt-names = "vopl_mmu";
 		clocks = <&cru ACLK_VOPL>, <&cru HCLK_VOPL>;
 		clock-names = "aclk", "iface";
 		power-domains = <&power PX30_PD_VO>;