msm8974-common: Commonize simpler version of mkbootimg

Change-Id: Idf4458e15060ed29283e2aaa2c1c14afb31223df
Revert "msm8974: Upgrade ACDB files"

 * Will revisit, causes issues for new project.

This reverts commit 4499de3870fdae2d1bca28442eb3c5aafee7eadd.

Change-Id: Ia3d0bbe915921d5793ca71d79fe45151e3f9c2d2
msm8974: Part 2 of "I am an idiot"

 * Derp on the proprietary side caused these files to briefly not
   be included for certain individuals. Restore the upgraded version.

This reverts commit 9ac522bdf58abc7d1917a29b093d4e5bfb35db01.

Change-Id: Ib1300dbc65127c436a23eedc5034a5ae008e7121
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0