ethernet: device tree and defconfig changes for neutrino

This change is needed to initialize the power rails
and GPIO configuration for neutrino driver.
fix the conflict.

Change-Id: Ib2bb328c4e657232e75724a0cd9673a8d9b8ba06
CRs-Fixed: 1003103
Signed-off-by: Sergio Frades Ruiz De Sola <csfrade@codeaurora.org>
Signed-off-by: Zou Shunxiang <shunxian@codeaurora.org>