find7u: unified partition layout

Change-Id: I8fc629c5d92a758d477a0dec534d939f31af65f0
Merge branch 'find7u' into HEAD
Rename to find7u and bring up as new device

Change-Id: I1360e6ceb54a3b8619fa9346a1ccaeba35f3c674
add missing omni_find7u.mk