Add RIL_REQUEST_EMERGENCY_DIAL string in rillog

This will let riljLog display this request in the log and bugreport,
 and maybe helpful for some tools that parses this log.

Test: Treehugger; Manual
Fixes: 134704399
Change-Id: Idc724ff5363e7459e291ffb13d955003a1ba6655
diff --git a/src/java/com/android/internal/telephony/RIL.java b/src/java/com/android/internal/telephony/RIL.java
index f0b4f1b..a98bb2b 100644
--- a/src/java/com/android/internal/telephony/RIL.java
+++ b/src/java/com/android/internal/telephony/RIL.java
@@ -5261,6 +5261,8 @@
                 return "GET_CURRENT_CALLS";
             case RIL_REQUEST_DIAL:
                 return "DIAL";
+            case RIL_REQUEST_EMERGENCY_DIAL:
+                return "EMERGENCY_DIAL";
             case RIL_REQUEST_GET_IMSI:
                 return "GET_IMSI";
             case RIL_REQUEST_HANGUP: