make types.hh available to C code

arch/x64/apic.hh

arch/x64/arch-setup.cc

arch/x64/exceptions.hh

arch/x64/math.cc

arch/x64/processor.hh

core/mmio.cc

drivers/clock.hh

drivers/clockevent.hh

drivers/device.hh

drivers/kvmclock.cc

drivers/pci-device.hh

drivers/pci-function.hh

drivers/pci.hh

include/align.hh

include/elf.hh

include/interrupt.hh

include/mmio.hh

include/mmu.hh

include/osv/types.h

include/sglist.hh