nrf52: dts: Force user to explicitly set UART0 compatible

Since the UART0 @ 0x40002000 can either be UART or UARTE the user of the
soc.dtsi needs to select either compatible = "nordic,nrf-uarte" or
"nordic,nrf-uart"

Signed-off-by: Kumar Gala <[email protected]>

Author: galak

dts/arm/nordic/nrf52832.dtsi

@@ -39,7 +39,8 @@
 
 	soc {
 		uart0: uart@40002000 {
-			compatible = "nordic,nrf-uarte", "nordic,nrf-uart";
+			/* uart can be either UART or UARTE, for the user to pick */
+			/* compatible = "nordic,nrf-uarte" or "nordic,nrf-uart"; */
 			reg = <0x40002000 0x1000>;
 			interrupts = <2 1>;
 			status = "disabled";

dts/arm/nordic/nrf52840.dtsi

@@ -40,7 +40,8 @@
 
 	soc {
 		uart0: uart@40002000 {
-			compatible = "nordic,nrf-uarte", "nordic,nrf-uart";
+			/* uart can be either UART or UARTE, for the user to pick */
+			/* compatible = "nordic,nrf-uarte" or "nordic,nrf-uart"; */
 			reg = <0x40002000 0x1000>;
 			interrupts = <2 1>;
 			status = "disabled";