qcom-common: add dtbTool

commit b053341c3dddcd0e808f95f26d95eeb50e36798b
Author: David Ng <dave@codeaurora.org>
Date:   Fri Jul 27 16:52:11 2012 -0700

    dtbtool: Initial revision of table of device tree tool

    A tool to generate an image of table of device tree.  The image
    contains a header, table of device tree indices followed by the
    list of device tree blobs.

    Refer to dtbtool.txt for more information.

commit 82e6aa61f4d71bd6954e9dee00ab63ab3193d1c3
Author: David Ng <dave@codeaurora.org>
Date:   Thu Aug 9 16:56:41 2012 -0700

    dtbtool: Add support for array of ID's in qcom,msm-id tag

    Allow multiple chipset/platform/soc_rev triplets in
    qcom,msm-id tag.  This allows one DTS/DTB file to be used
    for multiple chipset/platform/soc_rev variants.

    Preliminary version - needs error handling in triplet
    parsing and general code cleanup.

Change-Id: I62e5c8ad3f141723c6ab35fc271970a2aaddbe27
qcom-common: enable msm8974 platform

Change-Id: I9d9473aedf559bd13e04eb7cf2fa2c9cbdb3ed27