arm64: dts: meson: Link nvmem and secure-monitor nodes

The former is going to use the latter to retrieve the efuses data.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-axg.dtsi

@@ -117,6 +117,7 @@ efuse: efuse {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		read-only;
+		secure-monitor = <&sm>;
 	};
 
 	psci {

arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi

@@ -22,6 +22,7 @@ efuse: efuse {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		read-only;
+		secure-monitor = <&sm>;
 	};
 
 	psci {

arch/arm64/boot/dts/amlogic/meson-gx.dtsi

@@ -161,6 +161,7 @@ efuse: efuse {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		read-only;
+		secure-monitor = <&sm>;
 
 		sn: sn@14 {
 			reg = <0x14 0x10>;