hw/mips/Makefile.objs: Make GT64XXX_PCI config

Signed-off-by: Ákos Kovács <akoskovacs@gmx.com>
hw/mips/Kconfig: Add Kconfig for MIPS

Signed-off-by: Ákos Kovács <akoskovacs@gmx.com>
hw/acpi/Kconfig: Move ACPI configuration to hw/acpi

Signed-off-by: Ákos Kovács <akoskovacs@gmx.com>
hw/isa/Kconfig: VT82C686 should depend on ACPI

Signed-off-by: Ákos Kovács <akoskovacs@gmx.com>