gstreamer1: fix unaligned detection for or1k

Fixes:
http://autobuild.buildroot.net/results/717/717d78ce0935749f477bdf3133b6f20057a28c01/

Add patch to fix unaligned detection for or1k.  Patch submitted upstream:

https://bugzilla.gnome.org/show_bug.cgi?id=778866



Signed-off-by: Peter Korsgaard <peter@korsgaard.com>