Update Fuchsia WlanPolicyLib to allow None type param

Add string conversion to fuchsia_device.wlan_policy_lib commands to allow None type.

Bug: None
Test: WlanRebootTest
Change-Id: Idf48f218233fd905272988397c48a91da54b9053
1 file changed
tree: 2da383cad82910fa1ede9e600d2fc8587a7b32de
  1. acts/
  2. acts_tests/
  3. tools/
  4. wts-acts/
  5. Android.mk
  6. OWNERS
  7. PREUPLOAD.cfg