hw/vfio: Avoid ram_addr_t in vfio_container_query_dirty_bitmap()

hw/vfio: Avoid ram_addr_t in vfio_container_query_dirty_bitmap()

The 'ram_addr_t' type is described as:

  a QEMU internal address space that maps guest RAM physical
  addresses into an intermediate address space that can map
  to host virtual address spaces.

vfio_container_query_dirty_bitmap() doesn't expect such QEMU
intermediate address, but a guest physical addresses. Use the
appropriate 'hwaddr' type, rename as @translated_addr for
clarity.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250930123528.42878-4-philmd@linaro.org
Signed-off-by: Cédric Le Goater <clg@redhat.com>