arm64: dts: ti: k3-am654-idk: Fix dtbs_check warning in ICSSG dmas

arm64: dts: ti: k3-am654-idk: Fix dtbs_check warning in ICSSG dmas

ICSSG doesn't use mgmnt rsp dmas. But these are added in the dmas for
icssg1-eth and icssg0-eth node.

These mgmnt rsp dmas result in below dtbs_check warnings.

/workdir/arch/arm64/boot/dts/ti/k3-am654-idk.dtb: icssg1-eth: dmas: [[39, 49664], [39, 49665], [39, 49666], [39, 49667], [39, 49668], [39, 49669], [39, 49670], [39, 49671], [39, 16896], [39, 16897], [39, 16898], [39, 16899]] is too long
	from schema $id: http://devicetree.org/schemas/net/ti,icssg-prueth.yaml#
/workdir/arch/arm64/boot/dts/ti/k3-am654-idk.dtb: icssg0-eth: dmas: [[39, 49408], [39, 49409], [39, 49410], [39, 49411], [39, 49412], [39, 49413], [39, 49414], [39, 49415], [39, 16640], [39, 16641], [39, 16642], [39, 16643]] is too long
	from schema $id: http://devicetree.org/schemas/net/ti,icssg-prueth.yaml#

Fix these warnings by removing mgmnt rsp dmas from icssg1-eth and
icssg0-eth nodes.

Fixes: a4d5bc3214eb ("arm64: dts: ti: k3-am654-idk: Add ICSSG Ethernet ports")
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20240830111000.232028-1-danishanwar@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>