(DO NOT MERGE) media: Add new OMX extension for setting latency.

Test: Video Recording
Bug: 34221970
Change-Id: I525d86358f3f25a04ae0ac1a80461f8414e5a163
(cherry picked from commit 0c77369428af1e6baaf98a069aa2873bc4d3df1d)
diff --git a/include/media/openmax/OMX_AsString.h b/include/media/openmax/OMX_AsString.h
index 6b21979..56d7cc8 100644
--- a/include/media/openmax/OMX_AsString.h
+++ b/include/media/openmax/OMX_AsString.h
@@ -557,6 +557,7 @@
         case OMX_IndexConfigPriority:                   return "ConfigPriority";
         case OMX_IndexConfigOperatingRate:              return "ConfigOperatingRate";
         case OMX_IndexParamConsumerUsageBits:           return "ParamConsumerUsageBits";
+        case OMX_IndexConfigLatency:                    return "ConfigLatency";
         default:                                        return asString((OMX_INDEXTYPE)i, def);
     }
 }