ARM64: dts: mediatek: add pericfg syscon to mt8516.dtsi

This adds support for the PERICFG register range as a syscon. This will
soon be used by the MediaTek Ethernet MAC driver for NIC configuration.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/arm64/boot/dts/mediatek/mt8516.dtsi

@@ -191,6 +191,11 @@
 			#clock-cells = <1>;
 		};
 
+		pericfg: pericfg@10003050 {
+			compatible = "mediatek,mt8516-pericfg", "syscon";
+			reg = <0 0x10003050 0 0x1000>;
+		};
+
 		apmixedsys: apmixedsys@10018000 {
 			compatible = "mediatek,mt8516-apmixedsys", "syscon";
 			reg = <0 0x10018000 0 0x710>;