Bug 822225: Switch bionic to linaro/ics-plus-aosp on PandaBoard

The new bionic branch contains changes that are already present on
other B2G devices; including a fix for bug 809367, where memory was
allocated after a new process was forked but before exec got called.

Change-Id: Ia1f1601cea08d9cb312bc39e9eeb262b95b8d698
Signed-off-by: Thomas Zimmermann <tdz@users.sourceforge.net>