wifi: fix old vts tests on newer HAL

Older registerCallback is not deprecated until V1.4 HAL correctly.
As a result, their returning codes are still SUCCESS.

Bug: 173570755
Test: atest VtsHalWifiSupplicantV1_0TargetTest \
            VtsHalWifiSupplicantV1_1TargetTest \
            VtsHalWifiSupplicantV1_2TargetTest
Change-Id: Ib23821d64f53c144d74818fa3ed9aca06cd25a27
diff --git a/wifi/supplicant/1.2/vts/functional/Android.bp b/wifi/supplicant/1.2/vts/functional/Android.bp
index c23585a..2592a2b 100644
--- a/wifi/supplicant/1.2/vts/functional/Android.bp
+++ b/wifi/supplicant/1.2/vts/functional/Android.bp
@@ -51,6 +51,7 @@
         "android.hardware.wifi.supplicant@1.1",
         "android.hardware.wifi.supplicant@1.2",
         "android.hardware.wifi.supplicant@1.3",
+        "android.hardware.wifi.supplicant@1.4",
         "android.hardware.wifi@1.0",
         "android.hardware.wifi@1.1",
         "libgmock",