arm64: dts: agilex: Add SysMgr compatible

Add the System Manager compatible string to the sysmgr node
for accessing the System Manager driver.
Ethernet and EDAC drivers use this driver.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

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

@@ -337,7 +337,7 @@ spi1: spi@ffda5000 {
 		};
 
 		sysmgr: sysmgr@ffd12000 {
-			compatible = "altr,sys-mgr", "syscon";
+			compatible = "altr,sys-mgr-s10","altr,sys-mgr";
 			reg = <0xffd12000 0x500>;
 		};