drivers: eth_enc28j60: Fix CS GPIO support

We now generate CS GPIO defines from the DTS that we can utilize.  We
needed to slightly update the #defines in the driver from:

DT_MICROCHIP_ENC28J60_0_CS_GPIOS_{PIN,CONTROLLER} to
DT_MICROCHIP_ENC28J60_0_CS_GPIO_{PIN,CONTROLLER}

Fixes #12640

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
1 file changed