Add new eri.xml for Xfinity.

Because Xfinity uses same eri_311480.xml with Verizon.
It shows Verzion string, to avoid that, create a new eri.xml for
Xfinity, it will show Xfinity brand.

Bug: 137541049
Test: make
Change-Id: I621a7702f73b697407f4684795edc76f4789c9e2
1 file changed