Disable some dubious "early" USB handoff code that allegedly works around bugs
on some systems (we don't know which ones) but rudely breaks some others.

Also make the kernel warnings reporting BIOS handoff problems be more useful,
reporting the register whose value displays the trouble.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>