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)
diff --git a/private/wificond.te b/private/wificond.te
index 1912256..8bf37ca 100644
--- a/private/wificond.te
+++ b/private/wificond.te
@@ -1,6 +1,6 @@
 typeattribute wificond coredomain;
 
-set_prop(wificond, exported_wifi_prop)
+set_prop(wificond, wifi_hal_prop)
 set_prop(wificond, wifi_prop)
 set_prop(wificond, ctl_default_prop)