[oe] [jethro] Backport proposal

[Otavio Salvador]

Hello folks,

[Cced Robert Yang]

I would like to propuse the backport of following changes:

Author: Mariano Lopez <mariano.lopez at linux.intel.com>
Date:   Wed Dec 30 06:52:54 2015 +0000

    image_types.bbclass: Rebuild when WICVARS change

    The procces to do a wic image is to save a file with
    variables required by wic and then call wic using this
    file. Because this is external to bitbake if the vars
    change, the image won't be rebuild; an example of such
    is IMAGE_BOOT_FILES.

    This patch adds these variables to vardeps of do_rootfs
    when a wic image is build. This will rebuild the image
    if a variable needed by wic changes.

    [YOCTO #8693]

    Signed-off-by: Mariano Lopez <mariano.lopez at linux.intel.com>
    Signed-off-by: Ross Burton <ross.burton at intel.com>
    (cherry picked from commit 12c54d50ed4c321dc272beb3c6cb770965c979f1)

Author: Christopher Larson <chris_larson at mentor.com>
Date:   Tue Nov 10 14:18:20 2015 -0700

    image_types: improve wks path specification

    Hardcoding a full input path with zero flexibility goes against
everything the
    Yocto Project is about. Rework it to let the user specify the wks base
    filename with WKS_FILE and it'll search the layers for the wks file and use
    it.

    Signed-off-by: Christopher Larson <chris_larson at mentor.com>
    Signed-off-by: Ross Burton <ross.burton at intel.com>
    (cherry picked from commit 8cc7f5229f5447c2183ac319dd52c7ed737ec89b)

Those improve the 'wic' image support on Jethro and are merged into
master for a while. Could those be backported?

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
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