arm64: dts: imx8mp: Remove 'snps,rx-sched-sp'

According to nxp,dwmac-imx.yaml, 'snps,rx-sched-sp' is not a valid
property.

Remove it from the imx8mp board devicetree files to avoid
dt-schema warnings:

... 'snps,tx-sched-sp' does not match any of the regexes

Signed-off-by: Fabio Estevam <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>

Author: Fabio Estevam

arch/arm64/boot/dts/freescale/imx8mp-beacon-som.dtsi

@@ -71,7 +71,6 @@
 
 	mtl_rx_setup: rx-queues-config {
 		snps,rx-queues-to-use = <5>;
-		snps,rx-sched-sp;
 
 		queue0 {
 			snps,dcb-algorithm;
@@ -106,7 +105,6 @@
 
 	mtl_tx_setup: tx-queues-config {
 		snps,tx-queues-to-use = <5>;
-		snps,tx-sched-sp;
 
 		queue0 {
 			snps,dcb-algorithm;

arch/arm64/boot/dts/freescale/imx8mp-evk.dts

@@ -307,7 +307,6 @@
 
 	mtl_tx_setup: tx-queues-config {
 		snps,tx-queues-to-use = <5>;
-		snps,tx-sched-sp;
 
 		queue0 {
 			snps,dcb-algorithm;

arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi

@@ -241,7 +241,6 @@
 
 	mtl_rx_setup: rx-queues-config {
 		snps,rx-queues-to-use = <5>;
-		snps,rx-sched-sp;
 
 		queue0 {
 			snps,dcb-algorithm;
@@ -276,7 +275,6 @@
 
 	mtl_tx_setup: tx-queues-config {
 		snps,tx-queues-to-use = <5>;
-		snps,tx-sched-sp;
 
 		queue0 {
 			snps,dcb-algorithm;