Add VTS for emergencyDial

Modify the document for 'hasKnownUserIntentEmergency'.

In the scenarios that the 'address' in the 'dialInfo' field has other
 functions besides the emergency number function, if the
 'hasKnownUserIntentEmergency' field is true, the user's intent for this
 dial request is emergency call, and the modem must treat this as an
 actual emergency dial; if the 'hasKnownUserIntentEmergency' field is
 false, Android does not know user's intent for this call.

Test: compile
Bug: 121345950
Change-Id: I3457e7519be564ac5043e06380e9450a1b12425f
(cherry picked from commit 7208840ec0148ad5a01bdf419170282cd1b32437)
diff --git a/radio/1.4/IRadio.hal b/radio/1.4/IRadio.hal
index 8ef1f96..f7ae39f 100644
--- a/radio/1.4/IRadio.hal
+++ b/radio/1.4/IRadio.hal
@@ -128,9 +128,11 @@
      * does not support the emergency service category or emergency uniform resource names, the
      * field 'categories' or 'urns' may be ignored.
      *
-     * 'fromEmergencyDialer' indicates if this request originated from emergency dialer/shortcut,
-     * which means an explicit intent from the user to dial an emergency number. The modem must
-     * treat this as an actual emergency dial and not try to disambiguate.
+     * In the scenarios that the 'address' in the 'dialInfo' field has other functions besides the
+     * emergency number function, if the 'hasKnownUserIntentEmergency' field is true, the user's
+     * intent for this dial request is emergency call, and the modem must treat this as an actual
+     * emergency dial; if the 'hasKnownUserIntentEmergency' field is false, Android does not know
+     * user's intent for this call.
      *
      * If 'isTesting' is true, this request is for testing purpose, and must not be sent to a real
      * emergency service; otherwise it's for a real emergency call request.
@@ -146,14 +148,15 @@
      *     of the call.
      * @param urns the emergency Uniform Resource Names (URN)
      * @param routing @1.4::EmergencyCallRouting the emergency call routing information.
-     * @param fromEmergencyDialer Flag indicating if this request originated from emergency dialer.
+     * @param hasKnownUserIntentEmergency Flag indicating if user's intent for the emergency call
+     *     is known.
      * @param isTesting Flag indicating if this request is for testing purpose.
      *
      * Response function is IRadioResponse.emergencyDialResponse()
      */
     oneway emergencyDial(int32_t serial, Dial dialInfo,
             bitfield<EmergencyServiceCategory> categories, vec<string> urns,
-            EmergencyCallRouting routing, bool fromEmergencyDialer, bool isTesting);
+            EmergencyCallRouting routing, bool hasKnownUserIntentEmergency, bool isTesting);
 
     /**
      * Starts a network scan