DeviceInfoSettings: Update the cpuinfo parser

Parsing /proc/cpuinfo for the processor type assumes a format that
isn't true in later kernel versions. Update the parser to be more
generic and search specifically for the "Processor" descriptor

Change-Id: I9d5bbf29a8383fcb9357a6950dea4202b05f50ab
Merge remote-tracking branch 'cyan/cm-11.0' into cm-11.0