arm: dts: am4372: add syscon node to cpsw to read mac address

Add syscon node to cpsw device node to read mac address
from efuse.
Signed-off-by: NMugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: NTom Rini <trini@konsulko.com>
Acked-by: NJoe Hershberger <joe.hershberger@ni.com>

arch/arm/dts/am4372.dtsi

@@ -547,6 +547,7 @@
 			active_slave = <0>;
 			cpts_clock_mult = <0x80000000>;
 			cpts_clock_shift = <29>;
+			syscon = <&scm_conf>;
 			ranges;
 
 			davinci_mdio: mdio@4a101000 {