ARM: dts: sun8i: Add CPUCFG device node for A83T dtsi

As we found in sun9i-a80, CPUCFG is a collection of registers that are
mapped to the SoC's signals from each individual processor core and
associated peripherals.

These registers are used for SMP bringup and CPU hotplugging.
Signed-off-by: NMylène Josserand <mylene.josserand@bootlin.com>
Reviewed-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NMaxime Ripard <maxime.ripard@bootlin.com>

arch/arm/boot/dts/sun8i-a83t.dtsi

@@ -349,6 +349,11 @@
 			};
 		};
 
+		cpucfg@1700000 {
+			compatible = "allwinner,sun8i-a83t-cpucfg";
+			reg = <0x01700000 0x400>;
+		};
+
 		syscon: syscon@1c00000 {
 			compatible = "allwinner,sun8i-a83t-system-controller",
 				"syscon";