Add android.hardware.telephony.calling feature to emulator system image

The test testStartCallWithSpeakerphoneTrue_SpeakerphoneOnInCall will be skipped if TestUtils.hasTelephonyFeature returns false. The TestUtils.hasTelephonyFeature function checks if both FEATURE_TELEPHONY and FEATURE_TELEPHONY_CALLING are supported.

BUG: 288141830
TEST: atest CtsTelecomHostCases

Change-Id: Ic9ccf939c65a591369843962dc015e701cc6491f
Signed-off-by: Weilun Du <wdu@google.com>
diff --git a/data/etc/handheld_core_hardware.xml b/data/etc/handheld_core_hardware.xml
index ef20627..5c2227f 100644
--- a/data/etc/handheld_core_hardware.xml
+++ b/data/etc/handheld_core_hardware.xml
@@ -53,6 +53,7 @@
     <feature name="android.hardware.sensor.gyroscope" />
     <feature name="android.hardware.sensor.hinge_angle" />
     <feature name="android.hardware.telephony" />
+    <feature name="android.hardware.telephony.calling" />
     <feature name="android.hardware.telephony.data" />
     <feature name="android.hardware.telephony.gsm" />
     <feature name="android.hardware.telephony.ims" />