drivers: ethernet: Update Kconfig

* Utilize DT_HAS_<COMPAT>_ENABLED for devicetree based drivers
* Move to using 'select SPI' instead of 'depends on'
  (see commit df81fef94483da9f2811d48088affbcfd61ab18c for
   more details)

Signed-off-by: Kumar Gala <galak@kernel.org>
14 files changed