Redirect console from VirtualBox window to ttyS0

This change is specific to the qemux86 build, when used in VirtualBox.

Open-webOS-DCO-1.0-Signed-off-by: Steve Lemke <steve.lemke@palm.com>

Change-Id: I835a0bcf7b4a3d5588a073d6637696689b453cc0
Reviewed-on: http://g2g.palm.com/831
Reviewed-by: Build Verification
Reviewed-by: Steve Lemke <steve.lemke@palm.com>
Tested-by: Steve Lemke <steve.lemke@palm.com>
Reviewed-by: Herb Kuta <herb.kuta@palm.com>