e2fsprogs: install populate-extfs.sh

* install populate-extfs.sh from contrib, be aware that in order
  to use it you need to set DEBUGFS shell variable, otherwise it will
  try to use debugfs from relative path which is almost always
  incorrect:
    CONTRIB_DIR=$(dirname $(readlink -f $0))
    DEBUGFS="$CONTRIB_DIR/../debugfs/debugfs"

(From OE-Core rev: 1a3a7a1ba8c271acd13cb1d740ef83ee02829e33)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/e2fsprogs/e2fsprogs_1.42.9.bb

@@ -54,6 +54,8 @@ do_install () {
 	oe_multilib_header ext2fs/ext2_types.h
 	install -d ${D}${base_bindir}
 	mv ${D}${bindir}/chattr ${D}${base_bindir}/chattr.e2fsprogs
+
+	install -v -m 755 ${S}/contrib/populate-extfs.sh ${D}${base_sbindir}/
 }
 
 do_install_append_class-target() {