wic: use the same partition object in direct and partitionedfs

Partition attributes were copied to the dictionary in partitionedfs
code, which makes the code hard to follow.

Used partition object passed from direct.py module as is in
partitionedfs.

(From OE-Core rev: 97db24d34847a641868f9ee83aae56f9dd5e0a8a)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/plugins/imager/direct.py

@@ -237,14 +237,7 @@ class DirectPlugin(ImagerPlugin):
             part.prepare(self, self.workdir, self.oe_builddir, self.rootfs_dir,
                          self.bootimg_dir, self.kernel_dir, self.native_sysroot)
 
-
-            self._image.add_partition(part.disk_size, part.disk,
-                                      part.mountpoint, part.source_file,
-                                      part.fstype, part.label,
-                                      fsopts=part.fsopts, boot=part.active,
-                                      align=part.align, no_table=part.no_table,
-                                      part_type=part.part_type, uuid=part.uuid,
-                                      system_id=part.system_id)
+            self._image.add_partition(part)
 
         if fstab_path:
             shutil.move(fstab_path + ".orig", fstab_path)