Update AndroidManifest.xml in example

This no longer compiled because it was an old version. I guess we
have to be very careful when updating the structure of
AndroidManifest.xml after the release.

Task-number: QTBUG-34763
Change-Id: I32dfe11c83eff42a50b54327fab6d4c5d05b0829
Reviewed-by: Christian Stromme <christian.stromme@digia.com>