Re-ordered imports in order to satisfy python linter.

Author: Rostepher

utils/build_swift/driver_arguments.py

@@ -12,8 +12,6 @@
 
 import android.adb.commands
 
-from . import defaults
-
 from swift_build_support.swift_build_support import arguments
 from swift_build_support.swift_build_support import host
 from swift_build_support.swift_build_support import targets
@@ -22,6 +20,8 @@
 from swift_build_support.swift_build_support.targets import \
     StdlibDeploymentTarget
 
+from . import defaults
+
 
 __all__ = [
     'apply_default_arguments',