bench-boot: start convert to cli function

build

@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 
-import platform
 import re
 import os
 
@@ -368,7 +367,7 @@ Which components to build. Default: qemu-buildroot
             }
             # E.g. on an ARM host, the package gcc-arm-linux-gnueabihf
             # is called just gcc.
-            processor = platform.processor()
+            processor = self.env['host_arch']
             if processor != 'arm':
                 apt_get_pkgs.update({
                     'gcc-arm-linux-gnueabihf',