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: a4d5bc3 ("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>

arch/arm64/boot/dts/ti/k3-am654-idk.dtso

@@ -59,9 +59,7 @@
 		       <&main_udmap 0xc107>, /* egress slice 1 */
 
 		       <&main_udmap 0x4100>, /* ingress slice 0 */
-		       <&main_udmap 0x4101>, /* ingress slice 1 */
-		       <&main_udmap 0x4102>, /* mgmnt rsp slice 0 */
-		       <&main_udmap 0x4103>; /* mgmnt rsp slice 1 */
+		       <&main_udmap 0x4101>; /* ingress slice 1 */
 		dma-names = "tx0-0", "tx0-1", "tx0-2", "tx0-3",
 			    "tx1-0", "tx1-1", "tx1-2", "tx1-3",
 			    "rx0", "rx1";
@@ -127,9 +125,7 @@
 		       <&main_udmap 0xc207>, /* egress slice 1 */
 
 		       <&main_udmap 0x4200>, /* ingress slice 0 */
-		       <&main_udmap 0x4201>, /* ingress slice 1 */
-		       <&main_udmap 0x4202>, /* mgmnt rsp slice 0 */
-		       <&main_udmap 0x4203>; /* mgmnt rsp slice 1 */
+		       <&main_udmap 0x4201>; /* ingress slice 1 */
 		dma-names = "tx0-0", "tx0-1", "tx0-2", "tx0-3",
 			    "tx1-0", "tx1-1", "tx1-2", "tx1-3",
 			    "rx0", "rx1";