Enable WiFi for arm, arm64 and x86_64

Set the required parameters in BoardConfigs to allow WiFi to work on
remaining architectures. Also update SELinux policy needed to make WiFi
work on arm and arm64. This was not required on x86 but refused to work
on arm without these changes.

BUG: 74514143
Test: Build emulator image and manually verify WiFi functionality
Change-Id: Ic645ccf7249f84ae0320770b0ef7b1b6102b7b14
(cherry picked from commit 6d28bfbeefea8fe1919ff0987ae3d935d974dc6d)
(cherry picked from commit 023a7ba64bd3b189a148ad388606ca5747ea20b1)
(cherry picked from commit 9c9cefdafbae50c0e371c30bcccb98a8b7697e98)