Add wifi_hal_prop and remove exported_wifi_prop

To remove bad context names "exported*_prop"

Bug: 155844385
Test: boot and see no denials
Change-Id: Icd30be64355699618735d4012461835eca8cd651
Merged-In: Icd30be64355699618735d4012461835eca8cd651
(cherry picked from commit 37c2d4d0c9669f3c7590f3dfccfac3c9725d1b5a)
(cherry picked from commit 3b66e9b9f855ad0694efed405a30d64265854784)
10 files changed