arm64: dts: agilex: correct service layer driver's compatible value

Correct the compatible property value for Intel Service Layer driver
on Intel Agilex SoC platform.
Signed-off-by: Richard Gong <richard.gong@intel.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>

arch/arm64/boot/dts/intel/socfpga_agilex.dtsi

@@ -539,7 +539,7 @@ qspi: spi@ff8d2000 {
 
 		firmware {
 			svc {
-				compatible = "intel,stratix10-svc";
+				compatible = "intel,agilex-svc";
 				method = "smc";
 				memory-region = <&service_reserved>;