aufs: Update to aufs3.x-rcN-20140421
[rt] Disable until it is updated for 3.15 or later
Refresh/drop patches as appropriate; in particular:
- update filenames in fbdev patches
- drop the ARM sunxi backports, which came from 3.15
svn path=/dists/trunk/linux/; revision=21296
mmap() holds reference to the union file as well as the branch file.
This behaviour requires an extra patch and used to be conditional on
CONFIG_AUFS_PROC_MAP. It is now unconditional because otherwise the
aufs inode number may be reused and this can break userland file
caching. So add the extra patch and drop our patch to disable
CONFIG_AUFS_PROC_MAP.
svn path=/dists/trunk/linux/; revision=20778
Ben Hutchings