dts: arm: renesas: ra: fix incorrect node name for sci devices

The sci devices described in the device tree source for RA MCUs are
incorrectly specified as being UARTs when they should be SCIs (serial
communication interfaces) which can not only operate as UARTs but also
as I2C, SPI etc.

Signed-off-by: Ian Morris <ian.d.morris@outlook.com>

dts/arm/renesas/ra/ra-cm4-common.dtsi

@@ -247,7 +247,7 @@
 		};
 
 		sci0: sci@40070000 {
-			compatible = "renesas,ra-uart-sci";
+			compatible = "renesas,ra-sci";
 			reg = <0x40070000 0x20>;
 			interrupts = <RA_ICU_IRQ_UNSPECIFIED 0 RA_ICU_SCI0_RXI>,
 				     <RA_ICU_IRQ_UNSPECIFIED 0 RA_ICU_SCI0_TXI>,
@@ -266,7 +266,7 @@
 		};
 
 		sci1: sci@40070020 {
-			compatible = "renesas,ra-uart-sci";
+			compatible = "renesas,ra-sci";
 			reg = <0x40070020 0x20>;
 			interrupts = <RA_ICU_IRQ_UNSPECIFIED 0 RA_ICU_SCI1_RXI>,
 				     <RA_ICU_IRQ_UNSPECIFIED 0 RA_ICU_SCI1_TXI>,
@@ -284,7 +284,7 @@
 		};
 
 		sci9: sci@40070120 {
-			compatible = "renesas,ra-uart-sci";
+			compatible = "renesas,ra-sci";
 			reg = <0x40070120 0x20>;
 			interrupts = <RA_ICU_IRQ_UNSPECIFIED 0 RA_ICU_SCI9_RXI>,
 				     <RA_ICU_IRQ_UNSPECIFIED 0 RA_ICU_SCI9_TXI>,