m7-common: Add WiFi packages and configuration

Change-Id: I1c45e100f0319895cacf5ebb125f94aeffe6d611
Revert "Revert "m7-common: use permissive SELinux""

* Disable SELinux for bringup

This reverts commit 8795b860c38a01d9e776590aadec2ab6ee07192f.

Change-Id: I34b6435e2112ac5a6b41b76fc2ae4601cbe42d94
m7-common: Remove deprecated flags

Change-Id: Ibb68790574bbbd2ebe8b3fd0f25b96381d6e3b8c