southbridge/hudson: Disable USB controllers if devicetree says so

Change-Id: I009a01d3324d48d2eeda87d74c8e3e7c27958ee2
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5525
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
intel/minnowmax: Update devicetree

- Align register values.

- Enable both EHCI and XHCI so the choice of port used can be made
at runtime.  When both are enabled in devicetree, XHCI currently gets
disabled by the FSP chipset code.  This can be overridden in mainboard
code or by a Kconfig entry, but there's a question about whether or not
that's desired.

- Enable function 1c.0 so the rest of the functions will be
seen, even though the function is not actually used.  This is a
short-term fix, as the correct solution is to determine whether or not
any of the other functions are enabled, and not to hide function 0 if
they are.  I am working on that, but I want to get this in for now.

Change-Id: I83ae12c2393024b82a55d0b3a5ffa8782e16107e
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/7663
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
fsp_baytrail: Allow selection of USB controller by get_option

It was requested to be able to update XHCI vs EHCI via get_option,
so I've added it here for minnow max.  This could get moved to the
chipset_fsp_util.c file later, but I'm adding it here for now.

More checking needs to be added to this:
- Are both controllers enabled in devicetree?  If not, we don't want
to allow the switch.

Change-Id: I4d8d2229cb9fa0cd9068701454b28ffac6d8e767
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/7633
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marc Jones <marc.jones@se-eng.com>