Fix http://bugzilla.kernel.org/show_bug.cgi?id=6128

Finish morphing the "early handoff" version of the EHCI BIOS handshake over
to match the previous implementation inside the EHCI driver (except that
now we forcibly disable the SMI).  The version that had been with the PCI
code was surprisingly full of bugs.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Cc: <yazar256@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>