KSZ8851-SNL: Add ethtool support for EEPROM via eeprom_93cx6

Add ethtool EEPROM read/write support using the eeprom_93cx6
library instead of open-coding the functions.

Depends on eeprom_93cx6 driver getting EEPROM write support.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Simtec Linux Team <linux@simtec.co.uk>
[sboyd@codeaurora.org: Removed previous eeprom implementation]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/micrel/Kconfig b/drivers/net/ethernet/micrel/Kconfig
index d10c2e1..1ea811c 100644
--- a/drivers/net/ethernet/micrel/Kconfig
+++ b/drivers/net/ethernet/micrel/Kconfig
@@ -42,6 +42,8 @@
 	select NET_CORE
 	select MII
 	select CRC32
+	select MISC_DEVICES
+	select EEPROM_93CX6
 	---help---
 	  SPI driver for Micrel KS8851 SPI attached network chip.