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>

drivers/net/ethernet/micrel/Kconfig

@@ -42,6 +42,8 @@ config KS8851
 	select NET_CORE
 	select MII
 	select CRC32
+	select MISC_DEVICES
+	select EEPROM_93CX6
 	---help---
 	  SPI driver for Micrel KS8851 SPI attached network chip.
 

drivers/net/ethernet/micrel/ks8851.h

@@ -27,22 +27,11 @@
 #define KS_EEPCR				0x22
 #define EEPCR_EESRWA				(1 << 5)
 #define EEPCR_EESA				(1 << 4)
-#define EEPCR_EESB_OFFSET			3
-#define EEPCR_EESB				(1 << EEPCR_EESB_OFFSET)
+#define EEPCR_EESB				(1 << 3)
 #define EEPCR_EEDO				(1 << 2)
 #define EEPCR_EESCK				(1 << 1)
 #define EEPCR_EECS				(1 << 0)
 
-#define EEPROM_OP_LEN				3	/* bits:*/
-#define EEPROM_OP_READ				0x06
-#define EEPROM_OP_EWEN				0x04
-#define EEPROM_OP_WRITE				0x05
-#define EEPROM_OP_EWDS				0x14
-
-#define EEPROM_DATA_LEN				16	/* 16 bits EEPROM */
-#define EEPROM_WRITE_TIME			4	/* wrt ack time in ms */
-#define EEPROM_SK_PERIOD			400	/* in us */
-
 #define KS_MBIR					0x24
 #define MBIR_TXMBF				(1 << 12)
 #define MBIR_TXMBFA				(1 << 11)