Fix NullPointerException issue when user change

When info is null, we have risk to have access null point.

Change-Id: Ie6acee5c99d6297e31d46585435a735a38b19e82
Add processor info in device info screen

Display the CPU processor info based on the "Hardware" line
of /proc/cpuinfo in the Device Info screen.

Change-Id: I77a8dfc6c35bf6395c0a1ac1426fb24884af554d
Add missing mdpi, hdpi, xhdpi drawables for new theme engine

Change-Id: I70dd75257f0e3a0a20b844a1ea3cc36506de177b