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: Icd56961a3fac455a51192a1ced3db9e9ef330744
Signed-off-by: Thomas Zimmermann <tdz@users.sourceforge.net>