ls970-common: remove e975 from conn_init make fragment, it has its own

This fixes a build fail when both ls970-common and e975 device trees are
checked out at the same time.

Change-Id: I2d1bb6c82fae15453e4ed7b22bae9a8da594fcea
Merge pull request #1 from CyanogenMod/cm-10.2

ls970-common: remove e975 from conn_init make fragment, it has its own