arm: dts: Import and update DT for Khadas VIM3

In Linux meson-g12-common.dtsi was introduced as well as new g12b nodes
and headers, as dependencies of new meson-g12b-a311d-khadas-vim3.dts.

Copied from da0c9ea146cb ("Linux 5.4-rc2")

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/arch/arm/dts/meson-g12b.dtsi b/arch/arm/dts/meson-g12b.dtsi
index 9e88e51..5628ccd 100644
--- a/arch/arm/dts/meson-g12b.dtsi
+++ b/arch/arm/dts/meson-g12b.dtsi
@@ -4,12 +4,16 @@
  * Author: Neil Armstrong <narmstrong@baylibre.com>
  */
 
-#include "meson-g12a.dtsi"
+#include "meson-g12-common.dtsi"
+#include <dt-bindings/power/meson-g12a-power.h>
 
 / {
 	compatible = "amlogic,g12b";
 
 	cpus {
+		#address-cells = <0x2>;
+		#size-cells = <0x0>;
+
 		cpu-map {
 			cluster0 {
 				core0 {
@@ -40,8 +44,21 @@
 			};
 		};
 
-		/delete-node/ cpu@2;
-		/delete-node/ cpu@3;
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0 0x0>;
+			enable-method = "psci";
+			next-level-cache = <&l2>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0 0x1>;
+			enable-method = "psci";
+			next-level-cache = <&l2>;
+		};
 
 		cpu100: cpu@100 {
 			device_type = "cpu";
@@ -74,9 +91,25 @@
 			enable-method = "psci";
 			next-level-cache = <&l2>;
 		};
+
+		l2: l2-cache0 {
+			compatible = "cache";
+		};
 	};
 };
 
 &clkc {
 	compatible = "amlogic,g12b-clkc";
 };
+
+&ethmac {
+	power-domains = <&pwrc PWRC_G12A_ETH_ID>;
+};
+
+&vpu {
+	power-domains = <&pwrc PWRC_G12A_VPU_ID>;
+};
+
+&sd_emmc_a {
+	amlogic,dram-access-quirk;
+};