Moved channel 919 to emergency channel

According to Chilean regulation, channel 919 is used for
emergency purposes.

Bug: 112386707
Test: Manual
Change-Id: Id2c9534469b51e8bd1e71559d99ab426552ff125
diff --git a/res/values-mcc730/config.xml b/res/values-mcc730/config.xml
index 47c3a7b..1623df1 100644
--- a/res/values-mcc730/config.xml
+++ b/res/values-mcc730/config.xml
@@ -21,7 +21,7 @@
 
     <string-array name="public_safety_messages_channels_range_strings" translatable="false">
         <!-- Channel 919 and 921 are required by Chile -->
-        <item>0x0397:type=other, emergency=false</item>
+        <item>0x0397:type=other, emergency=true</item>
         <item>0x0399:type=other, emergency=false</item>
     </string-array>