FP4: Move WiFi supplicant service definition to dedicated RC

Change-Id: I7c448ecb511a738903ebe3702fefdf2cb13c3be3
diff --git a/BoardConfig.mk b/BoardConfig.mk
index edffef9..802b8ec 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -217,6 +217,7 @@
 WIFI_DRIVER_STATE_ON := "ON"
 WIFI_HIDL_FEATURE_DUAL_INTERFACE := true
 WIFI_HIDL_FEATURE_AWARE := true
+WIFI_HIDL_UNIFIED_SUPPLICANT_SERVICE_RC_ENTRY := true
 WPA_SUPPLICANT_VERSION := VER_0_8_X
 
 # Inherit the proprietary files