[realtek-ambz2] Add initial AmebaZ2 support

boards/_base/realtek-ambz2-2mb-large.json

@@ -0,0 +1,12 @@
+{
+	"flash": {
+		"ota1": "0x00C000+0xF8000",
+		"ota2": "0x104000+0xF8000",
+		"kvs": "0x1FC000+0x2000",
+		"userdata": "0x1FE000+0x2000"
+	},
+	"upload": {
+		"flash_size": 2097152,
+		"maximum_size": 1015808
+	}
+}

boards/_base/realtek-ambz2-8710.json

@@ -0,0 +1,12 @@
+{
+	"connectivity": [
+		"wifi"
+	],
+	"doc": {
+		"params": {
+			"extra": {
+				"Wi-Fi": "802.11 b/g/n"
+			}
+		}
+	}
+}

boards/_base/realtek-ambz2-8720.json

@@ -0,0 +1,14 @@
+{
+	"connectivity": [
+		"wifi",
+		"ble"
+	],
+	"doc": {
+		"params": {
+			"extra": {
+				"Wi-Fi": "802.11 b/g/n",
+				"BLE": "v4.2"
+			}
+		}
+	}
+}

boards/_base/realtek-ambz2.json

@@ -0,0 +1,35 @@
+{
+	"build": {
+		"family": "RTL8720C",
+		"f_cpu": "100000000L",
+		"prefix": "arm-none-eabi-",
+		"ldscript_sdk": "rtl8710c_ram.ld",
+		"ldscript_arduino": "rtl8710c_ram.ld"
+	},
+	"flash": {
+		"part_table": "0x000000+0x1000",
+		"system": "0x001000+0x1000",
+		"calibration": "0x002000+0x1000",
+		"boot": "0x004000+0x8000"
+	},
+	"debug": {
+		"protocol": "openocd",
+		"protocols": []
+	},
+	"frameworks": [
+		"realtek-ambz2-sdk"
+	],
+	"upload": {
+		"maximum_ram_size": 262144
+	},
+	"doc": {
+		"params": {
+			"manufacturer": "Realtek",
+			"series": "AmebaZ2",
+			"voltage": "3.0V - 3.6V"
+		},
+		"links": {
+			"General info": "../../docs/platform/realtek/README.md"
+		}
+	}
+}