Label wifi.interface.

This lets us override AIDL WiFi HAL interfaces.

Bug: 313385486
Change-Id: I3bb0c274f5fb6f709d09b67deff2df7229e04369
diff --git a/private/property_contexts b/private/property_contexts
index 3771873..a8ac38a 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -1292,6 +1292,7 @@
 wifi.concurrent.interface u:object_r:wifi_hal_prop:s0 exact string
 wifi.direct.interface     u:object_r:wifi_hal_prop:s0 exact string
 wifi.interface            u:object_r:wifi_hal_prop:s0 exact string
+wifi.interface.           u:object_r:wifi_hal_prop:s0 prefix string
 wlan.driver.status        u:object_r:wifi_hal_prop:s0 exact enum ok unloaded
 
 ro.boot.wificountrycode u:object_r:wifi_config_prop:s0 exact string