[beken-72xx] Fix compilation on ARM systems (#58)

* Fix toolchain for BK7231 on ARM cpus

* Fix format

* PR comments

* PR Comments, part 2

platform.json

@@ -46,7 +46,11 @@
       "manifest": {
         "description": "SDK for Ameba1"
       },
-      "toolchain": "gccarmnoneeabi@~1.50201.0",
+      "toolchains": {
+		"x86_64": "gccarmnoneeabi@~1.50201.0",
+		"arm": "gccarmnoneeabi@~1.50401.211104",
+		"arm64": "gccarmnoneeabi@~1.50401.210715"
+	  },
       "libraries": {
         "lwip": [
           "v2.1.3-amb1"
@@ -60,7 +64,11 @@
       "manifest": {
         "description": "SDK for AmebaZ2"
       },
-      "toolchain": "gccarmnoneeabi@~1.100301.0"
+      "toolchains": {
+		"x86_64": "gccarmnoneeabi@~1.100301.0",
+		"arm": "gccarmnoneeabi@~1.100301.0",
+		"arm64": "gccarmnoneeabi@~1.100301.0"
+	  }
     },
     "framework-beken-bdk": {
       "type": "framework",
@@ -69,7 +77,11 @@
       "manifest": {
         "description": "Beken Development Kit for FreeRTOS"
       },
-      "toolchain": "gccarmnoneeabi@~1.40804.0",
+	  "toolchains": {
+		"x86_64":"gccarmnoneeabi@~1.40804.0",
+		"arm": "gccarmnoneeabi@~1.40803.0",
+		"arm64": "gccarmnoneeabi@~1.40803.0"
+	  },
       "libraries": {
         "lwip": [
           "v2.1.3-bdk"

platform.py

@@ -2,6 +2,7 @@
 
 import importlib
 import json
+import platform
 import sys
 from os import system
 from os.path import dirname, join
@@ -170,8 +171,14 @@ class LibretuyaPlatform(PlatformBase):
             package_obj = {}
 
         # set specific compiler versions
-        if "toolchain" in package_obj:
-            (toolchain, version) = package_obj["toolchain"].split("@")
+        if "toolchains" in package_obj:
+            toolchains = package_obj["toolchains"]
+            if "arm" in platform.machine():
+                (toolchain, version) = toolchains["arm"].split("@")
+            elif "aarch64" in platform.machine():
+                (toolchain, version) = toolchains["arm64"].split("@")
+            else:
+                (toolchain, version) = toolchains["x86_64"].split("@")
             self.packages[f"toolchain-{toolchain}"]["version"] = version
 
         # mark framework SDK as required