[Systeminfo] T-e-c buildbreak on mobile profile

This commit fixes buildbreak for mobile profile when using this configuration:
  gbs build -A armv7l --define="profile mobile" -R \
    http://download.tizen.org/snapshots/tizen/mobile/latest/repos/arm/packages/

Build configuration will include systeminfo plugin for profiles - ivi and mobile.
Systeminfo will be excluded in common profile according to current
implementation of system_info_sim_ivi.cc and structure of SysSimInfo class.

BUG=XWALK-2861
Is this really necessary? It doesn't seem to be entirely related to this fix, and the change in the check would exclude this code from the desktop build AFAICS.