This updates the dependencies of the HCDs and host-side USB so that:

 - Options for PCI-only HCDs (UHCI and, for now, EHCI) only appear
   systems that actually have PCI.

 - Adding non-PCI bus glue support for another OHCI adapter doesn't
   need involve changing the main USB Kconfig anymore.

 - Minor tweaks to the OMAP support, so OMAP 17xx and 24xx don't need
   additional Kconfig changes and so the H3/17xx gets the ISP1301 too.

This still tries to hide host-side USB config options on systems that
don't offer USB.  While currently convenient, that's a losing proposition
in the long term:  host controllers on chips like SL811 and TD243 can be
put onto any custom board.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>