ARM: dts: at91: sam9x60: fix the SOC detection

Remove the dbgu compatible strings in the UART submodule of the
flexcom for the proper SOC detection.

Fixes: 99c80833 (ARM: dts: at91: sam9x60: Add missing flexcom definitions)
Signed-off-by: Durai Manickam KR <durai.manickamkr@microchip.com>
Link: https://lore.kernel.org/r/20230712100042.317856-1-durai.manickamkr@microchip.comSigned-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/microchip/sam9x60.dtsi

@@ -172,7 +172,7 @@ flx4: flexcom@f0000000 {
 				status = "disabled";
 
 				uart4: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <13 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -240,7 +240,7 @@ flx5: flexcom@f0004000 {
 				status = "disabled";
 
 				uart5: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					atmel,usart-mode = <AT91_USART_MODE_SERIAL>;
 					interrupts = <14 IRQ_TYPE_LEVEL_HIGH 7>;
@@ -370,7 +370,7 @@ flx11: flexcom@f0020000 {
 				status = "disabled";
 
 				uart11: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <32 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -419,7 +419,7 @@ flx12: flexcom@f0024000 {
 				status = "disabled";
 
 				uart12: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <33 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -576,7 +576,7 @@ flx6: flexcom@f8010000 {
 				status = "disabled";
 
 				uart6: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <9 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -625,7 +625,7 @@ flx7: flexcom@f8014000 {
 				status = "disabled";
 
 				uart7: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <10 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -674,7 +674,7 @@ flx8: flexcom@f8018000 {
 				status = "disabled";
 
 				uart8: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <11 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -723,7 +723,7 @@ flx0: flexcom@f801c000 {
 				status = "disabled";
 
 				uart0: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <5 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -791,7 +791,7 @@ flx1: flexcom@f8020000 {
 				status = "disabled";
 
 				uart1: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <6 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -859,7 +859,7 @@ flx2: flexcom@f8024000 {
 				status = "disabled";
 
 				uart2: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <7 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -927,7 +927,7 @@ flx3: flexcom@f8028000 {
 				status = "disabled";
 
 				uart3: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <8 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -1050,7 +1050,7 @@ flx9: flexcom@f8040000 {
 				status = "disabled";
 
 				uart9: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <15 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -1099,7 +1099,7 @@ flx10: flexcom@f8044000 {
 				status = "disabled";
 
 				uart10: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <16 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0