This patch adds Altivec support for RAID-6, if appropriately configured on
the ppc or ppc64 architectures.  Note that it changes the compile flags for
ppc64 in order to handle -maltivec correctly; this change was vetted on the
ppc64 mailing list and OK'd by paulus.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>