wic: implement --bmap option

This option enables generation of <image>.bmap file for the
result image using native bmaptool.

[YOCTO #9413]

(From OE-Core rev: d64c7b37c40b052510419b4d6629b83319c833e4)

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

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

@@ -86,7 +86,8 @@ class DirectPlugin(ImagerPlugin):
                                             kernel_dir,
                                             native_sysroot,
                                             compressor,
-                                            creatoropts)
+                                            creatoropts,
+                                            opts.bmap)
 
         try:
             creator.create()