[PATCH] ppc32: fix 440SP MAL channels count

Fix the MAL channels count in PPC 440SP OCP definition.  PPC 440SP has only
1 EMAC attached to MAL.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>