Expose virtual PID from child namespace in /proc/PID/status.

The virtual PID is used by Ubuntu Touch application manager code ( which
runs in the Android namespace ), to communicate with code that runs inside the
Ubuntu container.

This patch is not from upstream.  It was proposed on the lxc-users
mailing list:

http://www.mail-archive.com/lxc-users@lists.sourceforge.net/msg01840.html

Change-Id: If63652002c227827fb524e03a1d0210fc2b7d4b1
Original-Author: Greg Kurz <gkurz@fr.ibm.com>
Signed-off-by: Greg Kurz <gkurz@fr.ibm.com>
Signed-off-by: Tony Espy <espy@canonical.com>
Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Signed-off-by: Jani Monoses <jani@ubuntu.com>
Make a copy of msm8960_magnus_tp20_defconfig

Signed-off-by: Jani Monoses <jani@ubuntu.com>
Enable config options needed for Ubuntu Touch

Signed-off-by: Jani Monoses <jani@ubuntu.com>
Fix dupes causing warnings in config file
Do not use gcc-wrapper.py as it stops the build on too many warnings

Signed-off-by: Jani Monoses <jani@ubuntu.com>
Fix build breakage when using the smc instruction.

Add .arch_extension sec inline to enable use of the smc
instruction.

Signed-off-by: Jani Monoses <jani@ubuntu.com>