Add a new meta_data column

Add a new column to both the pdu and sms tables. This change just adds
the column definitions. Bug 2505620

Change-Id: I34b2794566a2900932ae34bdded4ed361d503d07
diff --git a/core/java/android/provider/Telephony.java b/core/java/android/provider/Telephony.java
index 0de1868..bf9e854 100644
--- a/core/java/android/provider/Telephony.java
+++ b/core/java/android/provider/Telephony.java
@@ -164,6 +164,12 @@
          * <P>Type: INTEGER</P>
          */
         public static final String ERROR_CODE = "error_code";
+
+        /**
+         * Meta data used externally.
+         * <P>Type: TEXT</P>
+         */
+        public static final String META_DATA = "meta_data";
 }
 
     /**
@@ -1064,6 +1070,12 @@
          * <P>Type: INTEGER (boolean)</P>
          */
         public static final String LOCKED = "locked";
+
+        /**
+         * Meta data used externally.
+         * <P>Type: TEXT</P>
+         */
+        public static final String META_DATA = "meta_data";
     }
 
     /**