goldfish: add radio access family

To LTE as default

only impact emulator

BUG: 134408724
Test:
CtsTelephonyTestCases android.telephony.cts.TelephonyManagerTest#testGetRadioAccessFamily

Change-Id: I9b4cdef60eaf58bbfe318aa3a462fba30bbac9a4
Merged-In: I9b4cdef60eaf58bbfe318aa3a462fba30bbac9a4

(cherry picked from commit eb1a1f0f670d1cba69609ad399b66639a81cb15f)
(cherry picked from commit db5ea081a90b6faf3e7b04478903199c1a50dc98)
diff --git a/ril/reference-ril.c b/ril/reference-ril.c
index 7e52e10..9480f54 100644
--- a/ril/reference-ril.c
+++ b/ril/reference-ril.c
@@ -2397,7 +2397,7 @@
    radioCapability.version = RIL_RADIO_CAPABILITY_VERSION;
    radioCapability.session = 0;
    radioCapability.phase   = 0;
-   radioCapability.rat     = 0;
+   radioCapability.rat     = RAF_LTE;
    radioCapability.logicalModemUuid[0] = '\0';
    radioCapability.status  = RC_STATUS_SUCCESS;