not use classic webcore

Change-Id: Ia0ecbab0f4ba20b972597409ec104622206cedca
use variant kernel defconfig

Change-Id: I47ed9f51fe7d918ffae14a6eb7ba66996b869369
change kernel variant defconfig to zte_n880e_variant_defconfig

Change-Id: I0b93305f6a04947474e18ac1bd547cf15e791d1e
reuse classic webcore

This reverts commit 9ede163afedf9b9612e951421ea3c9350e07b067.

Change-Id: Ie9f3d9aea154ff2a59cfd55c74c643ea9149ff01