updatehub: Bump revision to 447037c
updatehub: Bump revision to 447037c

The following changes are included:

    - 447037c Merge pull request #167 from gustavosbarreto/pattern_seek
    - 7211b87 raw: setup target for using in install-if-different
    - 9f2ded5 installifdifferent: add TargetProvider interface
    - 1bea7a5 install-if-different: change Proceed func to use file object instead of path string
    - cb25149 utils: add FsbFileSha256sum func
    - 0a5b181 (tmp) Merge pull request #166 from gustavosbarreto/clear_download_dir
    - 55da9a1 Remove unknown objects before downloading
    - 989f351 Merge pull request #165 from gustavosbarreto/spl
    - 8a3892c installifdifferent: improve u-boot pattern to match spl version
    - 6f7b3e5 Merge pull request #164 from OSSystems/fix-timeout
    - ab35d30 client: Fix net/http timeout

Signed-off-by: Fabio Berton <698e00bc51ed22392b375ef5a2fc95be5c8355a9@ossystems.com.br>

fbertux/meta-updatehub,UpdateHub/meta-updatehub,UpdateHub/meta-updatehub,fbertux/meta-updatehub,UpdateHub/meta-updatehub,fbertux/meta-updatehub