Add 'EP_AGORA' as a target

targets/targets.json

@@ -8664,6 +8664,25 @@
 		"release_versions": ["5"],
 		"bootloader_supported": true
     },
+    "EP_AGORA": {
+        "inherits": ["MCU_NRF52840"],
+        "device_name": "nRF52840_xxAA",
+        "supported_form_factors": [],
+        "config": {
+            "modem_is_on_board": {
+                "help": "Value: Tells the build system that the modem is on-board as oppose to a plug-in shield/module.",
+                "value": 0,
+                "macro_name": "MODEM_ON_BOARD"
+            },
+            "modem_data_connection_type": {
+                "help": "Value: Defines how an on-board modem is wired up to the MCU, e.g., data connection can be a UART or USB and so forth.",
+                "value": 0,
+                "macro_name": "MODEM_ON_BOARD_UART"
+            }
+        },
+        "components_add": ["SPIF"],
+        "release_versions": ["5"]
+    },
     "__build_tools_metadata__": {
         "version": "1",
         "public": false