vmm: Add page size as a parameter for MemoryRangeTable::from_bitmap()

This will be helpful to support the creation of a MemoryRangeTable from
virtio-mem, as it uses 2M pages.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

virtio-devices/src/vhost_user/vu_common_ctrl.rs

@@ -554,7 +554,7 @@ impl VhostUserHandle {
                 let ptr = region.as_ptr() as *const u64;
                 std::slice::from_raw_parts(ptr, len).to_vec()
             };
-            Ok(MemoryRangeTable::from_bitmap(bitmap, 0))
+            Ok(MemoryRangeTable::from_bitmap(bitmap, 0, 4096))
         } else {
             Err(Error::MissingShmLogRegion)
         }