hw/pci-host/piix.c calls various functions from the Range API.
Include "qemu/range.h" which declares them.

This fixes (when modifying unrelated headers):

  hw/pci-host/i440fx.c:54:11: error: field has incomplete type 'Range' (aka 'struct Range')
      Range pci_hole;
           ^
  include/qemu/typedefs.h:116:16: note: forward declaration of 'struct Range'
  typedef struct Range Range;
                 ^
  hw/pci-host/i440fx.c:126:9: error: implicit declaration of function 'ranges_overlap' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
      if (ranges_overlap(address, len, I440FX_PAM, I440FX_PAM_SIZE) ||
          ^
  hw/pci-host/i440fx.c:126:9: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
  hw/pci-host/i440fx.c:127:9: error: implicit declaration of function 'range_covers_byte' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
          range_covers_byte(address, len, I440FX_SMRAM)) {
          ^
  hw/pci-host/i440fx.c:127:9: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
  hw/pci-host/i440fx.c:189:13: error: implicit declaration of function 'range_is_empty' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
      val64 = range_is_empty(&s->pci_hole) ? 0 : range_lob(&s->pci_hole);
              ^

Acked-by: John Snow <jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200228114649.12818-15-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>