This adds support for newer Apple laptop models.  It adds the basic
identification for the new motherboards and the cpufreq support for
models using the new 7447A CPU from Motorola.

This is mostly the work of John Steele Scott <toojays@toojays.net> with
some bits from Sebastian Henschel <linux@kodeaffe.de> and some rework by
myself.  Please apply,
Signed-off-by: John Steele Scott <toojays@toojays.net>
Signed-off-by: Sebastian Henschel <linux@kodeaffe.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>