Update set_wifi_country_code to use shell cmd

Bug: 147758159
Test: Manual
Change-Id: I9281dd526359c7d030db65f4b868c77aac97727b
1 file changed
tree: 9342a2941699e39d474da9db29a614c3686dcbbf
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. OWNERS
  6. PREUPLOAD.cfg