Re-add Connection.getCallCapabilities

This method wasn't supposed to be removed.

Bug: 18594044
Bug: 18292176
Change-Id: Iac4cc0972643a8271957e480d3f48d50243af271
diff --git a/telecomm/java/android/telecom/Connection.java b/telecomm/java/android/telecom/Connection.java
index a551aad..bd0c33f 100644
--- a/telecomm/java/android/telecom/Connection.java
+++ b/telecomm/java/android/telecom/Connection.java
@@ -838,6 +838,11 @@
         return mConnectionCapabilities;
     }
 
+    /** @hide */
+    @SystemApi @Deprecated public final int getCallCapabilities() {
+        return getConnectionCapabilities();
+    }
+
     /**
      * Sets the value of the {@link #getAddress()} property.
      *