n801x: Rename n8013 to n801x everywhere.

This depends on the kernel defconfig being merged first.

We won't add n801x to the assert checks as we'll
handle that with libinit in recovery.

Signed-off-by: Humberto Borba <humberos@gmail.com>
Signed-off-by: Ibrahim Awwal <ibrahim.awwal@gmail.com>
Change-Id: I3f289655dd39a1f3e65d58b5a5f1202010f05b09