Revert "net: mvneta: convert to percpu interrupt"

This reverts commit 66d0539b0c9b498d1c318093317930243c161c70.

The purpose of this commit was to allow to use mvneta with local IRQ,
but it was not possible with the current state of the percpu API, and
the correct solution was "67269fe arm: mvebu: Use local interrupt only
for the timer 0". So we drop this commit which is not compatible with
the accurate fix by an improper use of the percpu API.