arm64: dts: ti: k3-am69-sk: Do not split single items

Each "mboxes" item is composed of two cells. It seems these got split
as they appeared to be two items in an array, but are actually a single
two-cell item. Rejoin these cells.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240123222536.875797-6-afd@ti.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-am69-sk.dts

@@ -823,77 +823,77 @@ &mcu_cpsw_port1 {
 };
 
 &mcu_r5fss0_core0 {
-	mboxes = <&mailbox0_cluster0>, <&mbox_mcu_r5fss0_core0>;
+	mboxes = <&mailbox0_cluster0 &mbox_mcu_r5fss0_core0>;
 	memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
 			<&mcu_r5fss0_core0_memory_region>;
 };
 
 &mcu_r5fss0_core1 {
-	mboxes = <&mailbox0_cluster0>, <&mbox_mcu_r5fss0_core1>;
+	mboxes = <&mailbox0_cluster0 &mbox_mcu_r5fss0_core1>;
 	memory-region = <&mcu_r5fss0_core1_dma_memory_region>,
 			<&mcu_r5fss0_core1_memory_region>;
 };
 
 &main_r5fss0_core0 {
-	mboxes = <&mailbox0_cluster1>, <&mbox_main_r5fss0_core0>;
+	mboxes = <&mailbox0_cluster1 &mbox_main_r5fss0_core0>;
 	memory-region = <&main_r5fss0_core0_dma_memory_region>,
 			<&main_r5fss0_core0_memory_region>;
 };
 
 &main_r5fss0_core1 {
-	mboxes = <&mailbox0_cluster1>, <&mbox_main_r5fss0_core1>;
+	mboxes = <&mailbox0_cluster1 &mbox_main_r5fss0_core1>;
 	memory-region = <&main_r5fss0_core1_dma_memory_region>,
 			<&main_r5fss0_core1_memory_region>;
 };
 
 &main_r5fss1_core0 {
-	mboxes = <&mailbox0_cluster2>, <&mbox_main_r5fss1_core0>;
+	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss1_core0>;
 	memory-region = <&main_r5fss1_core0_dma_memory_region>,
 			<&main_r5fss1_core0_memory_region>;
 };
 
 &main_r5fss1_core1 {
-	mboxes = <&mailbox0_cluster2>, <&mbox_main_r5fss1_core1>;
+	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss1_core1>;
 	memory-region = <&main_r5fss1_core1_dma_memory_region>,
 			<&main_r5fss1_core1_memory_region>;
 };
 
 &main_r5fss2_core0 {
-	mboxes = <&mailbox0_cluster3>, <&mbox_main_r5fss2_core0>;
+	mboxes = <&mailbox0_cluster3 &mbox_main_r5fss2_core0>;
 	memory-region = <&main_r5fss2_core0_dma_memory_region>,
 			<&main_r5fss2_core0_memory_region>;
 };
 
 &main_r5fss2_core1 {
-	mboxes = <&mailbox0_cluster3>, <&mbox_main_r5fss2_core1>;
+	mboxes = <&mailbox0_cluster3 &mbox_main_r5fss2_core1>;
 	memory-region = <&main_r5fss2_core1_dma_memory_region>,
 			<&main_r5fss2_core1_memory_region>;
 };
 
 &c71_0 {
 	status = "okay";
-	mboxes = <&mailbox0_cluster4>, <&mbox_c71_0>;
+	mboxes = <&mailbox0_cluster4 &mbox_c71_0>;
 	memory-region = <&c71_0_dma_memory_region>,
 			<&c71_0_memory_region>;
 };
 
 &c71_1 {
 	status = "okay";
-	mboxes = <&mailbox0_cluster4>, <&mbox_c71_1>;
+	mboxes = <&mailbox0_cluster4 &mbox_c71_1>;
 	memory-region = <&c71_1_dma_memory_region>,
 			<&c71_1_memory_region>;
 };
 
 &c71_2 {
 	status = "okay";
-	mboxes = <&mailbox0_cluster5>, <&mbox_c71_2>;
+	mboxes = <&mailbox0_cluster5 &mbox_c71_2>;
 	memory-region = <&c71_2_dma_memory_region>,
 			<&c71_2_memory_region>;
 };
 
 &c71_3 {
 	status = "okay";
-	mboxes = <&mailbox0_cluster5>, <&mbox_c71_3>;
+	mboxes = <&mailbox0_cluster5 &mbox_c71_3>;
 	memory-region = <&c71_3_dma_memory_region>,
 			<&c71_3_memory_region>;
 };