Revert "Remove all D2's expect d2dcm and add d2lte unified variant"

This reverts commit 7836827c2d70f73c0b3bf86212661e91505804cb.

Restore all D2's, per Ahmed's tears.

PS2: oops, don't remove d2lte.

Change-Id: I60a7527b811ec7ccd111c8f8e13f2b232a3009df