Android: further fixes to bb_device_status_check.py

The "p." properties are actually functions that can raise NoSuchProcess.
Capture that exception.

BUG=
TBR=navabi@chromium.org

Review URL: https://codereview.chromium.org/48523003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232750 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232750